/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_spec7_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:09:47,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:09:47,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:09:47,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:09:47,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:09:47,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:09:47,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:09:47,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:09:47,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:09:47,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:09:47,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:09:47,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:09:47,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:09:47,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:09:47,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:09:47,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:09:47,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:09:47,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:09:47,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:09:47,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:09:47,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:09:47,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:09:47,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:09:47,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:09:47,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:09:47,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:09:47,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:09:47,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:09:47,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:09:47,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:09:47,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:09:47,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:09:47,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:09:47,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:09:47,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:09:47,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:09:47,880 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 05:09:47,895 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:09:47,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:09:47,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:09:47,897 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:09:47,897 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:09:47,897 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:09:47,897 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:09:47,897 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:09:47,897 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:09:47,898 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:09:47,898 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:09:47,898 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:09:47,898 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:09:47,898 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:09:47,899 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:09:47,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:09:47,899 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:09:47,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:09:47,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:09:47,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:09:47,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:09:47,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:09:47,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:09:47,901 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:09:47,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:09:47,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:09:47,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:09:47,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:09:47,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:09:47,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:09:47,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:09:47,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:09:47,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:09:47,903 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:09:47,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:09:47,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:09:47,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:09:47,904 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:09:48,175 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:09:48,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:09:48,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:09:48,200 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:09:48,200 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:09:48,201 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product33.cil.c [2019-11-24 05:09:48,276 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f3851b96/3985cfc575ca4cc392a9f32066e4a5b2/FLAGa980ff6bc [2019-11-24 05:09:48,951 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:09:48,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product33.cil.c [2019-11-24 05:09:48,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f3851b96/3985cfc575ca4cc392a9f32066e4a5b2/FLAGa980ff6bc [2019-11-24 05:09:49,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f3851b96/3985cfc575ca4cc392a9f32066e4a5b2 [2019-11-24 05:09:49,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:09:49,150 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:09:49,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:09:49,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:09:49,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:09:49,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:09:49" (1/1) ... [2019-11-24 05:09:49,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b695465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:49, skipping insertion in model container [2019-11-24 05:09:49,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:09:49" (1/1) ... [2019-11-24 05:09:49,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:09:49,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:09:50,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:09:50,094 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:09:50,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:09:50,366 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:09:50,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:50 WrapperNode [2019-11-24 05:09:50,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:09:50,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:09:50,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:09:50,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:09:50,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:50" (1/1) ... [2019-11-24 05:09:50,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:50" (1/1) ... [2019-11-24 05:09:50,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:09:50,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:09:50,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:09:50,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:09:50,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:50" (1/1) ... [2019-11-24 05:09:50,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:50" (1/1) ... [2019-11-24 05:09:50,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:50" (1/1) ... [2019-11-24 05:09:50,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:50" (1/1) ... [2019-11-24 05:09:50,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:50" (1/1) ... [2019-11-24 05:09:50,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:50" (1/1) ... [2019-11-24 05:09:50,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:50" (1/1) ... [2019-11-24 05:09:50,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:09:50,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:09:50,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:09:50,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:09:50,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:50" (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 05:09:50,925 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:09:50,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:09:50,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:09:50,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:09:50,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:10:02,024 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:10:02,024 INFO L284 CfgBuilder]: Removed 407 assume(true) statements. [2019-11-24 05:10:02,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:10:02 BoogieIcfgContainer [2019-11-24 05:10:02,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:10:02,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:10:02,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:10:02,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:10:02,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:09:49" (1/3) ... [2019-11-24 05:10:02,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6976c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:10:02, skipping insertion in model container [2019-11-24 05:10:02,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:50" (2/3) ... [2019-11-24 05:10:02,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6976c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:10:02, skipping insertion in model container [2019-11-24 05:10:02,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:10:02" (3/3) ... [2019-11-24 05:10:02,044 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec7_product33.cil.c [2019-11-24 05:10:02,059 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:10:02,070 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-24 05:10:02,088 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-24 05:10:02,127 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:10:02,128 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:10:02,128 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:10:02,128 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:10:02,128 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:10:02,129 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:10:02,129 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:10:02,129 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:10:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-11-24 05:10:02,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 05:10:02,176 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:10:02,177 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 05:10:02,178 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:10:02,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:10:02,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1468352140, now seen corresponding path program 1 times [2019-11-24 05:10:02,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:10:02,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226052481] [2019-11-24 05:10:02,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:10:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:02,801 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 05:10:02,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226052481] [2019-11-24 05:10:02,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:10:02,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:10:02,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553039736] [2019-11-24 05:10:02,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:10:02,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:10:02,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:10:02,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:10:02,839 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-11-24 05:10:02,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:10:02,878 INFO L93 Difference]: Finished difference Result 50 states and 79 transitions. [2019-11-24 05:10:02,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:10:02,881 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-24 05:10:02,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:10:02,902 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:10:02,903 INFO L226 Difference]: Without dead ends: 35 [2019-11-24 05:10:02,910 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 05:10:02,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-24 05:10:02,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-24 05:10:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-24 05:10:02,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 57 transitions. [2019-11-24 05:10:02,987 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 57 transitions. Word has length 6 [2019-11-24 05:10:02,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:10:02,988 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 57 transitions. [2019-11-24 05:10:02,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:10:02,988 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 57 transitions. [2019-11-24 05:10:02,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:10:02,989 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:10:02,989 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:10:02,991 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:10:02,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:10:02,991 INFO L82 PathProgramCache]: Analyzing trace with hash -984426272, now seen corresponding path program 1 times [2019-11-24 05:10:02,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:10:02,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871424427] [2019-11-24 05:10:02,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:10:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:03,196 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 05:10:03,197 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871424427] [2019-11-24 05:10:03,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:10:03,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:10:03,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810197947] [2019-11-24 05:10:03,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:10:03,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:10:03,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:10:03,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:10:03,204 INFO L87 Difference]: Start difference. First operand 35 states and 57 transitions. Second operand 3 states. [2019-11-24 05:10:03,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:10:03,233 INFO L93 Difference]: Finished difference Result 46 states and 68 transitions. [2019-11-24 05:10:03,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:10:03,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-24 05:10:03,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:10:03,235 INFO L225 Difference]: With dead ends: 46 [2019-11-24 05:10:03,235 INFO L226 Difference]: Without dead ends: 37 [2019-11-24 05:10:03,238 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 05:10:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-24 05:10:03,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-24 05:10:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-24 05:10:03,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 59 transitions. [2019-11-24 05:10:03,258 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 59 transitions. Word has length 7 [2019-11-24 05:10:03,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:10:03,259 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 59 transitions. [2019-11-24 05:10:03,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:10:03,259 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 59 transitions. [2019-11-24 05:10:03,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:10:03,261 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:10:03,262 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:10:03,262 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:10:03,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:10:03,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1612828343, now seen corresponding path program 1 times [2019-11-24 05:10:03,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:10:03,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425273044] [2019-11-24 05:10:03,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:10:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:03,698 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 05:10:03,699 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425273044] [2019-11-24 05:10:03,699 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059023832] [2019-11-24 05:10:03,699 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 05:10:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:04,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:10:04,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:10:04,764 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 05:10:04,769 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:10:04,803 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 05:10:04,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1689104486] [2019-11-24 05:10:04,870 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-24 05:10:04,872 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:10:04,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:10:04,897 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:10:04,907 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:10:47,955 WARN L192 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 687 [2019-11-24 05:10:52,359 WARN L192 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 304 DAG size of output: 247 [2019-11-24 05:10:52,777 WARN L192 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 727 [2019-11-24 05:10:53,153 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8