/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_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:25:58,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:25:58,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:25:58,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:25:58,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:25:58,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:25:58,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:25:58,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:25:58,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:25:58,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:25:58,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:25:58,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:25:58,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:25:58,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:25:58,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:25:58,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:25:58,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:25:58,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:25:58,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:25:58,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:25:58,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:25:58,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:25:58,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:25:58,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:25:58,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:25:58,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:25:58,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:25:58,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:25:58,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:25:58,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:25:58,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:25:58,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:25:58,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:25:58,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:25:58,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:25:58,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:25:58,368 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 05:25:58,383 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:25:58,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:25:58,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:25:58,385 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:25:58,385 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:25:58,385 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:25:58,385 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:25:58,385 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:25:58,386 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:25:58,386 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:25:58,386 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:25:58,386 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:25:58,386 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:25:58,386 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:25:58,387 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:25:58,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:25:58,388 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:25:58,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:25:58,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:25:58,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:25:58,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:25:58,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:25:58,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:25:58,389 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:25:58,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:25:58,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:25:58,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:25:58,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:25:58,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:25:58,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:25:58,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:25:58,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:25:58,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:25:58,391 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:25:58,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:25:58,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:25:58,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:25:58,391 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:25:58,651 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:25:58,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:25:58,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:25:58,672 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:25:58,672 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:25:58,673 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2019-11-24 05:25:58,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2701f81a2/8033d5c3f7774d7187f19f4d6024b773/FLAG524fb5545 [2019-11-24 05:25:59,291 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:25:59,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2019-11-24 05:25:59,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2701f81a2/8033d5c3f7774d7187f19f4d6024b773/FLAG524fb5545 [2019-11-24 05:25:59,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2701f81a2/8033d5c3f7774d7187f19f4d6024b773 [2019-11-24 05:25:59,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:25:59,622 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:25:59,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:25:59,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:25:59,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:25:59,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:25:59" (1/1) ... [2019-11-24 05:25:59,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d10058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:59, skipping insertion in model container [2019-11-24 05:25:59,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:25:59" (1/1) ... [2019-11-24 05:25:59,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:25:59,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:26:00,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:26:00,153 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:26:00,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:26:00,338 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:26:00,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:00 WrapperNode [2019-11-24 05:26:00,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:26:00,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:26:00,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:26:00,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:26:00,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:00" (1/1) ... [2019-11-24 05:26:00,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:00" (1/1) ... [2019-11-24 05:26:00,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:26:00,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:26:00,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:26:00,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:26:00,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:00" (1/1) ... [2019-11-24 05:26:00,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:00" (1/1) ... [2019-11-24 05:26:00,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:00" (1/1) ... [2019-11-24 05:26:00,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:00" (1/1) ... [2019-11-24 05:26:00,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:00" (1/1) ... [2019-11-24 05:26:00,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:00" (1/1) ... [2019-11-24 05:26:00,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:00" (1/1) ... [2019-11-24 05:26:00,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:26:00,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:26:00,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:26:00,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:26:00,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:00" (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 05:26:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:26:00,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:26:00,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:26:00,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:26:02,299 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:26:02,299 INFO L284 CfgBuilder]: Removed 122 assume(true) statements. [2019-11-24 05:26:02,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:26:02 BoogieIcfgContainer [2019-11-24 05:26:02,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:26:02,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:26:02,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:26:02,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:26:02,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:25:59" (1/3) ... [2019-11-24 05:26:02,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12bc9696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:26:02, skipping insertion in model container [2019-11-24 05:26:02,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:00" (2/3) ... [2019-11-24 05:26:02,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12bc9696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:26:02, skipping insertion in model container [2019-11-24 05:26:02,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:26:02" (3/3) ... [2019-11-24 05:26:02,309 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2019-11-24 05:26:02,319 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:26:02,327 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:26:02,338 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:26:02,364 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:26:02,364 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:26:02,365 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:26:02,365 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:26:02,365 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:26:02,365 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:26:02,366 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:26:02,366 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:26:02,382 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:26:02,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:26:02,389 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:26:02,390 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:26:02,391 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:26:02,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:26:02,397 INFO L82 PathProgramCache]: Analyzing trace with hash -62288008, now seen corresponding path program 1 times [2019-11-24 05:26:02,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:26:02,408 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155945726] [2019-11-24 05:26:02,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:26:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:03,054 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 05:26:03,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155945726] [2019-11-24 05:26:03,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:26:03,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 05:26:03,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144870583] [2019-11-24 05:26:03,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:26:03,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:26:03,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:26:03,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:26:03,086 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2019-11-24 05:26:03,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:26:03,436 INFO L93 Difference]: Finished difference Result 95 states and 139 transitions. [2019-11-24 05:26:03,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 05:26:03,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-24 05:26:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:26:03,451 INFO L225 Difference]: With dead ends: 95 [2019-11-24 05:26:03,451 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 05:26:03,454 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-24 05:26:03,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 05:26:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 33. [2019-11-24 05:26:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-24 05:26:03,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2019-11-24 05:26:03,490 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 8 [2019-11-24 05:26:03,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:26:03,491 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2019-11-24 05:26:03,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:26:03,491 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2019-11-24 05:26:03,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:26:03,492 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:26:03,492 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:26:03,492 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:26:03,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:26:03,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1064327273, now seen corresponding path program 1 times [2019-11-24 05:26:03,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:26:03,493 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673101045] [2019-11-24 05:26:03,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:26:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:26:03,766 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673101045] [2019-11-24 05:26:03,766 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748930583] [2019-11-24 05:26:03,766 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 05:26:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:03,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-24 05:26:03,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:26:04,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:04,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:04,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:04,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:04,125 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:26:04,129 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:26:04,170 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:04,180 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:04,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:26:04,224 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1592684185] [2019-11-24 05:26:04,271 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:26:04,271 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:26:04,278 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:26:04,285 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:26:04,286 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:26:13,920 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:26:15,727 WARN L192 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:26:15,880 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:26:16,731 WARN L192 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 595 DAG size of output: 595 [2019-11-24 05:26:17,658 WARN L192 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 696 [2019-11-24 05:26:18,897 WARN L192 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 759 DAG size of output: 749 [2019-11-24 05:26:22,197 WARN L192 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 752 DAG size of output: 750 [2019-11-24 05:26:29,331 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:26:34,209 WARN L192 SmtUtils]: Spent 4.71 s on a formula simplification. DAG size of input: 484 DAG size of output: 429 [2019-11-24 05:27:20,158 WARN L192 SmtUtils]: Spent 45.52 s on a formula simplification. DAG size of input: 748 DAG size of output: 537