/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_spec0_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:50:00,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:50:00,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:50:00,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:50:00,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:50:00,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:50:00,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:50:00,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:50:00,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:50:00,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:50:00,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:50:00,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:50:00,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:50:00,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:50:00,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:50:00,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:50:00,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:50:00,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:50:00,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:50:00,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:50:00,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:50:00,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:50:00,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:50:00,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:50:00,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:50:00,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:50:00,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:50:00,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:50:00,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:50:00,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:50:00,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:50:00,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:50:00,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:50:00,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:50:00,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:50:00,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:50:00,784 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 04:50:00,818 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:50:00,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:50:00,819 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:50:00,819 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:50:00,819 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:50:00,819 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:50:00,820 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:50:00,820 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:50:00,820 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:50:00,820 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:50:00,820 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:50:00,820 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:50:00,821 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:50:00,821 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:50:00,821 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:50:00,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:50:00,822 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:50:00,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:50:00,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:50:00,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:50:00,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:50:00,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:50:00,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:50:00,823 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:50:00,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:50:00,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:50:00,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:50:00,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:50:00,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:50:00,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:50:00,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:50:00,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:50:00,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:50:00,825 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:50:00,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:50:00,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:50:00,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:50:00,826 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:50:01,143 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:50:01,165 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:50:01,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:50:01,172 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:50:01,172 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:50:01,173 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product33.cil.c [2019-11-24 04:50:01,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a0d65f26/85e79c3d491347a9a43233b4ccfa73ae/FLAG90d5ab6db [2019-11-24 04:50:01,894 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:50:01,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product33.cil.c [2019-11-24 04:50:01,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a0d65f26/85e79c3d491347a9a43233b4ccfa73ae/FLAG90d5ab6db [2019-11-24 04:50:02,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a0d65f26/85e79c3d491347a9a43233b4ccfa73ae [2019-11-24 04:50:02,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:50:02,115 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:50:02,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:50:02,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:50:02,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:50:02,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:50:02" (1/1) ... [2019-11-24 04:50:02,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f900208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:50:02, skipping insertion in model container [2019-11-24 04:50:02,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:50:02" (1/1) ... [2019-11-24 04:50:02,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:50:02,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:50:03,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:50:03,114 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:50:03,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:50:03,332 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:50:03,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:50:03 WrapperNode [2019-11-24 04:50:03,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:50:03,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:50:03,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:50:03,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:50:03,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:50:03" (1/1) ... [2019-11-24 04:50:03,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:50:03" (1/1) ... [2019-11-24 04:50:03,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:50:03,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:50:03,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:50:03,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:50:03,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:50:03" (1/1) ... [2019-11-24 04:50:03,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:50:03" (1/1) ... [2019-11-24 04:50:03,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:50:03" (1/1) ... [2019-11-24 04:50:03,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:50:03" (1/1) ... [2019-11-24 04:50:03,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:50:03" (1/1) ... [2019-11-24 04:50:03,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:50:03" (1/1) ... [2019-11-24 04:50:03,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:50:03" (1/1) ... [2019-11-24 04:50:03,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:50:03,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:50:03,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:50:03,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:50:03,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:50:03" (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 04:50:03,785 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:50:03,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:50:03,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:50:03,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:50:03,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:50:13,301 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:50:13,302 INFO L284 CfgBuilder]: Removed 407 assume(true) statements. [2019-11-24 04:50:13,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:50:13 BoogieIcfgContainer [2019-11-24 04:50:13,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:50:13,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:50:13,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:50:13,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:50:13,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:50:02" (1/3) ... [2019-11-24 04:50:13,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109698b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:50:13, skipping insertion in model container [2019-11-24 04:50:13,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:50:03" (2/3) ... [2019-11-24 04:50:13,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109698b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:50:13, skipping insertion in model container [2019-11-24 04:50:13,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:50:13" (3/3) ... [2019-11-24 04:50:13,312 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec0_product33.cil.c [2019-11-24 04:50:13,322 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:50:13,330 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-24 04:50:13,342 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-24 04:50:13,367 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:50:13,367 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:50:13,368 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:50:13,368 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:50:13,368 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:50:13,368 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:50:13,368 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:50:13,368 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:50:13,381 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-11-24 04:50:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:50:13,388 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:50:13,389 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:50:13,389 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:50:13,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:50:13,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1469209696, now seen corresponding path program 1 times [2019-11-24 04:50:13,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:50:13,406 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601594189] [2019-11-24 04:50:13,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:50:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:50:13,799 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 04:50:13,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601594189] [2019-11-24 04:50:13,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:50:13,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:50:13,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469605132] [2019-11-24 04:50:13,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:50:13,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:50:13,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:50:13,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:50:13,821 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2019-11-24 04:50:13,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:50:13,843 INFO L93 Difference]: Finished difference Result 56 states and 89 transitions. [2019-11-24 04:50:13,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:50:13,844 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 04:50:13,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:50:13,855 INFO L225 Difference]: With dead ends: 56 [2019-11-24 04:50:13,856 INFO L226 Difference]: Without dead ends: 38 [2019-11-24 04:50:13,859 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 04:50:13,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-24 04:50:13,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-24 04:50:13,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-24 04:50:13,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2019-11-24 04:50:13,901 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 7 [2019-11-24 04:50:13,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:50:13,901 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2019-11-24 04:50:13,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:50:13,902 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2019-11-24 04:50:13,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:50:13,903 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:50:13,903 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:50:13,903 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:50:13,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:50:13,904 INFO L82 PathProgramCache]: Analyzing trace with hash 971110418, now seen corresponding path program 1 times [2019-11-24 04:50:13,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:50:13,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620232347] [2019-11-24 04:50:13,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:50:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:50:14,112 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 04:50:14,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620232347] [2019-11-24 04:50:14,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:50:14,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:50:14,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956055698] [2019-11-24 04:50:14,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:50:14,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:50:14,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:50:14,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:50:14,116 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 3 states. [2019-11-24 04:50:14,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:50:14,136 INFO L93 Difference]: Finished difference Result 52 states and 76 transitions. [2019-11-24 04:50:14,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:50:14,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 04:50:14,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:50:14,139 INFO L225 Difference]: With dead ends: 52 [2019-11-24 04:50:14,139 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 04:50:14,140 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 04:50:14,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 04:50:14,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 04:50:14,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 04:50:14,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 63 transitions. [2019-11-24 04:50:14,158 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 63 transitions. Word has length 8 [2019-11-24 04:50:14,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:50:14,158 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 63 transitions. [2019-11-24 04:50:14,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:50:14,159 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 63 transitions. [2019-11-24 04:50:14,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 04:50:14,162 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:50:14,163 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:50:14,163 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:50:14,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:50:14,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1639683131, now seen corresponding path program 1 times [2019-11-24 04:50:14,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:50:14,166 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039551375] [2019-11-24 04:50:14,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:50:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:50:14,479 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 04:50:14,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039551375] [2019-11-24 04:50:14,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537027192] [2019-11-24 04:50:14,481 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 04:50:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:50:14,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:50:14,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:50:14,954 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 04:50:14,957 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:50:14,983 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 04:50:14,984 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1476980611] [2019-11-24 04:50:15,036 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-24 04:50:15,036 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:50:15,044 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:50:15,051 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:50:15,053 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:51:14,213 WARN L192 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 698 [2019-11-24 04:51:18,622 WARN L192 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 324 DAG size of output: 263 [2019-11-24 04:51:19,038 WARN L192 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 743 [2019-11-24 04:51:19,516 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8