/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_spec27_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:57:59,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:57:59,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:57:59,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:57:59,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:57:59,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:57:59,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:57:59,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:57:59,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:57:59,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:57:59,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:57:59,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:57:59,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:57:59,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:57:59,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:57:59,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:57:59,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:57:59,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:57:59,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:57:59,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:57:59,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:57:59,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:57:59,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:57:59,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:57:59,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:57:59,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:57:59,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:57:59,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:57:59,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:57:59,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:57:59,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:57:59,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:57:59,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:57:59,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:57:59,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:57:59,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:57:59,409 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 04:57:59,448 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:57:59,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:57:59,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:57:59,449 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:57:59,449 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:57:59,449 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:57:59,450 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:57:59,450 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:57:59,450 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:57:59,450 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:57:59,450 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:57:59,451 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:57:59,451 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:57:59,451 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:57:59,451 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:57:59,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:57:59,452 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:57:59,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:57:59,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:57:59,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:57:59,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:57:59,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:57:59,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:57:59,453 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:57:59,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:57:59,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:57:59,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:57:59,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:57:59,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:57:59,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:57:59,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:57:59,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:57:59,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:57:59,455 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:57:59,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:57:59,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:57:59,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:57:59,456 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:57:59,749 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:57:59,762 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:57:59,768 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:57:59,769 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:57:59,770 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:57:59,771 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c [2019-11-24 04:57:59,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934f1dc89/f39d0c203aa34c45af820e29b7541958/FLAGf40322096 [2019-11-24 04:58:00,441 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:58:00,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c [2019-11-24 04:58:00,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934f1dc89/f39d0c203aa34c45af820e29b7541958/FLAGf40322096 [2019-11-24 04:58:00,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934f1dc89/f39d0c203aa34c45af820e29b7541958 [2019-11-24 04:58:00,670 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:58:00,671 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:58:00,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:58:00,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:58:00,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:58:00,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:58:00" (1/1) ... [2019-11-24 04:58:00,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af05bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:00, skipping insertion in model container [2019-11-24 04:58:00,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:58:00" (1/1) ... [2019-11-24 04:58:00,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:58:00,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:58:01,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:58:01,565 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:58:01,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:58:01,789 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:58:01,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:01 WrapperNode [2019-11-24 04:58:01,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:58:01,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:58:01,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:58:01,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:58:01,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:01" (1/1) ... [2019-11-24 04:58:01,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:01" (1/1) ... [2019-11-24 04:58:01,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:58:01,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:58:01,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:58:01,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:58:02,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:01" (1/1) ... [2019-11-24 04:58:02,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:01" (1/1) ... [2019-11-24 04:58:02,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:01" (1/1) ... [2019-11-24 04:58:02,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:01" (1/1) ... [2019-11-24 04:58:02,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:01" (1/1) ... [2019-11-24 04:58:02,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:01" (1/1) ... [2019-11-24 04:58:02,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:01" (1/1) ... [2019-11-24 04:58:02,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:58:02,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:58:02,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:58:02,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:58:02,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:01" (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 04:58:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:58:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:58:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:58:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:58:02,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:58:10,464 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:58:10,465 INFO L284 CfgBuilder]: Removed 323 assume(true) statements. [2019-11-24 04:58:10,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:58:10 BoogieIcfgContainer [2019-11-24 04:58:10,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:58:10,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:58:10,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:58:10,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:58:10,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:58:00" (1/3) ... [2019-11-24 04:58:10,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728d2838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:58:10, skipping insertion in model container [2019-11-24 04:58:10,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:01" (2/3) ... [2019-11-24 04:58:10,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728d2838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:58:10, skipping insertion in model container [2019-11-24 04:58:10,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:58:10" (3/3) ... [2019-11-24 04:58:10,475 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product30.cil.c [2019-11-24 04:58:10,482 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:58:10,489 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-24 04:58:10,498 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-24 04:58:10,522 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:58:10,523 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:58:10,523 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:58:10,523 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:58:10,523 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:58:10,523 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:58:10,523 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:58:10,524 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:58:10,540 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-11-24 04:58:10,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:58:10,546 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:10,546 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:58:10,547 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:58:10,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:10,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1424273267, now seen corresponding path program 1 times [2019-11-24 04:58:10,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:10,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639741117] [2019-11-24 04:58:10,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:10,992 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 04:58:10,993 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639741117] [2019-11-24 04:58:10,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:58:10,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:58:10,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312891313] [2019-11-24 04:58:11,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:58:11,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:58:11,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:58:11,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:58:11,017 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2019-11-24 04:58:11,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:58:11,037 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2019-11-24 04:58:11,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:58:11,038 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 04:58:11,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:58:11,049 INFO L225 Difference]: With dead ends: 54 [2019-11-24 04:58:11,050 INFO L226 Difference]: Without dead ends: 37 [2019-11-24 04:58:11,053 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 04:58:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-24 04:58:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-24 04:58:11,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-24 04:58:11,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 60 transitions. [2019-11-24 04:58:11,093 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 60 transitions. Word has length 7 [2019-11-24 04:58:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:58:11,094 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 60 transitions. [2019-11-24 04:58:11,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:58:11,094 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 60 transitions. [2019-11-24 04:58:11,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:58:11,095 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:11,095 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:58:11,095 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:58:11,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:11,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2134070573, now seen corresponding path program 1 times [2019-11-24 04:58:11,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:11,096 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980993834] [2019-11-24 04:58:11,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:11,265 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 04:58:11,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980993834] [2019-11-24 04:58:11,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:58:11,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:58:11,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632342109] [2019-11-24 04:58:11,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:58:11,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:58:11,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:58:11,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:58:11,269 INFO L87 Difference]: Start difference. First operand 37 states and 60 transitions. Second operand 3 states. [2019-11-24 04:58:11,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:58:11,289 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2019-11-24 04:58:11,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:58:11,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 04:58:11,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:58:11,293 INFO L225 Difference]: With dead ends: 50 [2019-11-24 04:58:11,293 INFO L226 Difference]: Without dead ends: 39 [2019-11-24 04:58:11,294 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 04:58:11,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-24 04:58:11,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-11-24 04:58:11,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-24 04:58:11,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 62 transitions. [2019-11-24 04:58:11,309 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 62 transitions. Word has length 8 [2019-11-24 04:58:11,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:58:11,310 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 62 transitions. [2019-11-24 04:58:11,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:58:11,310 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 62 transitions. [2019-11-24 04:58:11,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 04:58:11,311 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:11,312 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:58:11,312 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:58:11,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:11,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1846467763, now seen corresponding path program 1 times [2019-11-24 04:58:11,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:11,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657008489] [2019-11-24 04:58:11,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:11,854 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 04:58:11,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657008489] [2019-11-24 04:58:11,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825181267] [2019-11-24 04:58:11,856 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 04:58:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:12,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:58:12,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:58:12,309 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 04:58:12,309 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:58:12,342 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 04:58:12,342 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1253432913] [2019-11-24 04:58:12,397 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-24 04:58:12,397 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:58:12,405 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:58:12,416 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:58:12,424 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:59:05,724 WARN L192 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 687 [2019-11-24 04:59:09,839 WARN L192 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 304 DAG size of output: 247 [2019-11-24 04:59:10,267 WARN L192 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 727 [2019-11-24 04:59:10,436 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8