/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_spec6_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:07:09,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:07:09,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:07:09,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:07:09,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:07:09,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:07:09,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:07:09,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:07:09,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:07:09,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:07:09,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:07:09,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:07:10,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:07:10,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:07:10,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:07:10,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:07:10,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:07:10,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:07:10,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:07:10,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:07:10,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:07:10,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:07:10,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:07:10,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:07:10,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:07:10,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:07:10,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:07:10,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:07:10,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:07:10,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:07:10,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:07:10,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:07:10,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:07:10,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:07:10,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:07:10,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:07:10,025 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 05:07:10,040 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:07:10,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:07:10,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:07:10,041 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:07:10,042 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:07:10,042 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:07:10,042 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:07:10,042 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:07:10,042 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:07:10,043 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:07:10,043 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:07:10,043 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:07:10,043 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:07:10,043 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:07:10,044 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:07:10,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:07:10,045 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:07:10,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:07:10,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:07:10,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:07:10,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:07:10,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:07:10,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:07:10,047 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:07:10,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:07:10,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:07:10,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:07:10,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:07:10,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:07:10,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:07:10,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:07:10,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:07:10,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:07:10,049 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:07:10,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:07:10,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:07:10,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:07:10,052 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:07:10,322 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:07:10,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:07:10,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:07:10,342 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:07:10,342 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:07:10,343 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product29.cil.c [2019-11-24 05:07:10,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb3af34c/2e3726c0cd9849ff9d903ea941fc508b/FLAG3495b227e [2019-11-24 05:07:11,089 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:07:11,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product29.cil.c [2019-11-24 05:07:11,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb3af34c/2e3726c0cd9849ff9d903ea941fc508b/FLAG3495b227e [2019-11-24 05:07:11,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb3af34c/2e3726c0cd9849ff9d903ea941fc508b [2019-11-24 05:07:11,255 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:07:11,257 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:07:11,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:07:11,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:07:11,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:07:11,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:07:11" (1/1) ... [2019-11-24 05:07:11,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dfcfaca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:11, skipping insertion in model container [2019-11-24 05:07:11,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:07:11" (1/1) ... [2019-11-24 05:07:11,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:07:11,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:07:12,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:07:12,139 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:07:12,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:07:12,407 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:07:12,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:12 WrapperNode [2019-11-24 05:07:12,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:07:12,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:07:12,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:07:12,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:07:12,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:12" (1/1) ... [2019-11-24 05:07:12,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:12" (1/1) ... [2019-11-24 05:07:12,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:07:12,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:07:12,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:07:12,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:07:12,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:12" (1/1) ... [2019-11-24 05:07:12,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:12" (1/1) ... [2019-11-24 05:07:12,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:12" (1/1) ... [2019-11-24 05:07:12,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:12" (1/1) ... [2019-11-24 05:07:12,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:12" (1/1) ... [2019-11-24 05:07:12,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:12" (1/1) ... [2019-11-24 05:07:12,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:12" (1/1) ... [2019-11-24 05:07:12,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:07:12,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:07:12,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:07:12,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:07:12,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:12" (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 05:07:12,878 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:07:12,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:07:12,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:07:12,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:07:12,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:07:27,799 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:07:27,799 INFO L284 CfgBuilder]: Removed 641 assume(true) statements. [2019-11-24 05:07:27,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:07:27 BoogieIcfgContainer [2019-11-24 05:07:27,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:07:27,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:07:27,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:07:27,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:07:27,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:07:11" (1/3) ... [2019-11-24 05:07:27,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c13122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:07:27, skipping insertion in model container [2019-11-24 05:07:27,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:07:12" (2/3) ... [2019-11-24 05:07:27,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c13122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:07:27, skipping insertion in model container [2019-11-24 05:07:27,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:07:27" (3/3) ... [2019-11-24 05:07:27,815 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec6_product29.cil.c [2019-11-24 05:07:27,826 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:07:27,835 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 05:07:27,847 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 05:07:27,878 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:07:27,878 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:07:27,878 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:07:27,878 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:07:27,879 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:07:27,879 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:07:27,880 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:07:27,880 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:07:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 05:07:27,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:07:27,908 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:07:27,909 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:07:27,909 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:07:27,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:07:27,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1643131687, now seen corresponding path program 1 times [2019-11-24 05:07:27,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:07:27,929 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967295885] [2019-11-24 05:07:27,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:07:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:07:28,393 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 05:07:28,394 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967295885] [2019-11-24 05:07:28,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:07:28,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:07:28,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044580906] [2019-11-24 05:07:28,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:07:28,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:07:28,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:07:28,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:07:28,426 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 05:07:28,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:07:28,468 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 05:07:28,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:07:28,470 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:07:28,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:07:28,486 INFO L225 Difference]: With dead ends: 100 [2019-11-24 05:07:28,486 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 05:07:28,492 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:07:28,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 05:07:28,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 05:07:28,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 05:07:28,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 05:07:28,556 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 05:07:28,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:07:28,556 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 05:07:28,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:07:28,557 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 05:07:28,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:07:28,558 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:07:28,558 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:07:28,558 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:07:28,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:07:28,560 INFO L82 PathProgramCache]: Analyzing trace with hash 737984149, now seen corresponding path program 1 times [2019-11-24 05:07:28,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:07:28,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781974397] [2019-11-24 05:07:28,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:07:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:07:28,755 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 05:07:28,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781974397] [2019-11-24 05:07:28,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:07:28,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:07:28,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549494184] [2019-11-24 05:07:28,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:07:28,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:07:28,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:07:28,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:07:28,759 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 05:07:28,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:07:28,776 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 05:07:28,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:07:28,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 05:07:28,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:07:28,778 INFO L225 Difference]: With dead ends: 94 [2019-11-24 05:07:28,778 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 05:07:28,779 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:07:28,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 05:07:28,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 05:07:28,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 05:07:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 05:07:28,788 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 05:07:28,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:07:28,788 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 05:07:28,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:07:28,788 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 05:07:28,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:07:28,789 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:07:28,790 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:07:28,790 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:07:28,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:07:28,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1688134231, now seen corresponding path program 1 times [2019-11-24 05:07:28,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:07:28,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204508957] [2019-11-24 05:07:28,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:07:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:07:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:07:29,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204508957] [2019-11-24 05:07:29,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:07:29,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:07:29,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894238897] [2019-11-24 05:07:29,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:07:29,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:07:29,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:07:29,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:07:29,025 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 5 states. [2019-11-24 05:07:29,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:07:29,265 INFO L93 Difference]: Finished difference Result 136 states and 190 transitions. [2019-11-24 05:07:29,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:07:29,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 05:07:29,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:07:29,269 INFO L225 Difference]: With dead ends: 136 [2019-11-24 05:07:29,269 INFO L226 Difference]: Without dead ends: 110 [2019-11-24 05:07:29,270 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:07:29,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-24 05:07:29,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2019-11-24 05:07:29,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-24 05:07:29,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 137 transitions. [2019-11-24 05:07:29,298 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 137 transitions. Word has length 13 [2019-11-24 05:07:29,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:07:29,298 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 137 transitions. [2019-11-24 05:07:29,298 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:07:29,298 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 137 transitions. [2019-11-24 05:07:29,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:07:29,301 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:07:29,301 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:07:29,302 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:07:29,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:07:29,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1686581798, now seen corresponding path program 1 times [2019-11-24 05:07:29,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:07:29,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612583437] [2019-11-24 05:07:29,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:07:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:07:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:07:29,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612583437] [2019-11-24 05:07:29,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236165855] [2019-11-24 05:07:29,562 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 05:07:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:07:29,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:07:29,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:07:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:07:29,952 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:07:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:07:29,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2116436704] [2019-11-24 05:07:29,995 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-24 05:07:29,995 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:07:30,002 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:07:30,009 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:07:30,009 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs