/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_spec11_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:51:24,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:51:24,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:51:24,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:51:24,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:51:24,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:51:24,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:51:24,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:51:24,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:51:24,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:51:24,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:51:24,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:51:24,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:51:24,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:51:24,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:51:24,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:51:24,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:51:24,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:51:24,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:51:24,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:51:24,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:51:24,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:51:24,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:51:24,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:51:24,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:51:24,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:51:24,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:51:24,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:51:24,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:51:24,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:51:24,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:51:24,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:51:24,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:51:24,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:51:24,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:51:24,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:51:24,867 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 04:51:24,896 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:51:24,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:51:24,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:51:24,897 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:51:24,898 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:51:24,898 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:51:24,898 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:51:24,898 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:51:24,898 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:51:24,899 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:51:24,900 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:51:24,900 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:51:24,900 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:51:24,901 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:51:24,901 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:51:24,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:51:24,902 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:51:24,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:51:24,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:51:24,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:51:24,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:51:24,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:51:24,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:51:24,903 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:51:24,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:51:24,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:51:24,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:51:24,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:51:24,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:51:24,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:51:24,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:51:24,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:51:24,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:51:24,906 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:51:24,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:51:24,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:51:24,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:51:24,908 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:51:25,186 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:51:25,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:51:25,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:51:25,209 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:51:25,210 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:51:25,211 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c [2019-11-24 04:51:25,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e711e88b/041c4472dde64ea0975d02eba39daba9/FLAG8a4fcf775 [2019-11-24 04:51:25,875 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:51:25,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c [2019-11-24 04:51:25,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e711e88b/041c4472dde64ea0975d02eba39daba9/FLAG8a4fcf775 [2019-11-24 04:51:26,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e711e88b/041c4472dde64ea0975d02eba39daba9 [2019-11-24 04:51:26,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:51:26,102 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:51:26,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:51:26,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:51:26,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:51:26,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:51:26" (1/1) ... [2019-11-24 04:51:26,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d9ee48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:26, skipping insertion in model container [2019-11-24 04:51:26,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:51:26" (1/1) ... [2019-11-24 04:51:26,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:51:26,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:51:26,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:51:26,990 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:51:27,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:51:27,249 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:51:27,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:27 WrapperNode [2019-11-24 04:51:27,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:51:27,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:51:27,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:51:27,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:51:27,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:27" (1/1) ... [2019-11-24 04:51:27,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:27" (1/1) ... [2019-11-24 04:51:27,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:51:27,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:51:27,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:51:27,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:51:27,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:27" (1/1) ... [2019-11-24 04:51:27,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:27" (1/1) ... [2019-11-24 04:51:27,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:27" (1/1) ... [2019-11-24 04:51:27,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:27" (1/1) ... [2019-11-24 04:51:27,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:27" (1/1) ... [2019-11-24 04:51:27,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:27" (1/1) ... [2019-11-24 04:51:27,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:27" (1/1) ... [2019-11-24 04:51:27,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:51:27,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:51:27,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:51:27,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:51:27,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:27" (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 04:51:27,646 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:51:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:51:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:51:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:51:27,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:51:34,964 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:51:34,964 INFO L284 CfgBuilder]: Removed 323 assume(true) statements. [2019-11-24 04:51:34,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:51:34 BoogieIcfgContainer [2019-11-24 04:51:34,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:51:34,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:51:34,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:51:34,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:51:34,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:51:26" (1/3) ... [2019-11-24 04:51:34,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6238ee00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:51:34, skipping insertion in model container [2019-11-24 04:51:34,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:27" (2/3) ... [2019-11-24 04:51:34,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6238ee00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:51:34, skipping insertion in model container [2019-11-24 04:51:34,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:51:34" (3/3) ... [2019-11-24 04:51:34,974 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product22.cil.c [2019-11-24 04:51:34,984 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:51:34,992 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-24 04:51:35,004 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-24 04:51:35,029 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:51:35,029 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:51:35,029 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:51:35,029 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:51:35,029 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:51:35,029 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:51:35,029 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:51:35,030 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:51:35,043 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-11-24 04:51:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:51:35,050 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:51:35,051 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:51:35,051 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:51:35,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:51:35,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1375749555, now seen corresponding path program 1 times [2019-11-24 04:51:35,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:51:35,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198893686] [2019-11-24 04:51:35,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:51:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:51:35,455 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 04:51:35,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198893686] [2019-11-24 04:51:35,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:51:35,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:51:35,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671422168] [2019-11-24 04:51:35,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:51:35,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:51:35,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:51:35,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:51:35,480 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2019-11-24 04:51:35,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:51:35,503 INFO L93 Difference]: Finished difference Result 58 states and 91 transitions. [2019-11-24 04:51:35,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:51:35,504 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 04:51:35,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:51:35,516 INFO L225 Difference]: With dead ends: 58 [2019-11-24 04:51:35,516 INFO L226 Difference]: Without dead ends: 38 [2019-11-24 04:51:35,519 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 04:51:35,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-24 04:51:35,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-24 04:51:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-24 04:51:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2019-11-24 04:51:35,560 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 7 [2019-11-24 04:51:35,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:51:35,560 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2019-11-24 04:51:35,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:51:35,560 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2019-11-24 04:51:35,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:51:35,561 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:51:35,561 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:51:35,562 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:51:35,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:51:35,562 INFO L82 PathProgramCache]: Analyzing trace with hash -713508367, now seen corresponding path program 1 times [2019-11-24 04:51:35,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:51:35,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794165032] [2019-11-24 04:51:35,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:51:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:51:35,750 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 04:51:35,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794165032] [2019-11-24 04:51:35,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:51:35,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:51:35,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202054509] [2019-11-24 04:51:35,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:51:35,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:51:35,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:51:35,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:51:35,755 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 3 states. [2019-11-24 04:51:35,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:51:35,778 INFO L93 Difference]: Finished difference Result 52 states and 76 transitions. [2019-11-24 04:51:35,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:51:35,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 04:51:35,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:51:35,782 INFO L225 Difference]: With dead ends: 52 [2019-11-24 04:51:35,782 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 04:51:35,784 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 04:51:35,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 04:51:35,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 04:51:35,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 04:51:35,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 63 transitions. [2019-11-24 04:51:35,795 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 63 transitions. Word has length 8 [2019-11-24 04:51:35,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:51:35,796 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 63 transitions. [2019-11-24 04:51:35,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:51:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 63 transitions. [2019-11-24 04:51:35,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 04:51:35,799 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:51:35,800 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:51:35,800 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:51:35,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:51:35,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1459088935, now seen corresponding path program 1 times [2019-11-24 04:51:35,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:51:35,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567895463] [2019-11-24 04:51:35,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:51:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:51:36,116 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 04:51:36,116 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567895463] [2019-11-24 04:51:36,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:51:36,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:51:36,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799406114] [2019-11-24 04:51:36,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:51:36,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:51:36,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:51:36,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:51:36,120 INFO L87 Difference]: Start difference. First operand 40 states and 63 transitions. Second operand 5 states. [2019-11-24 04:51:36,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:51:36,324 INFO L93 Difference]: Finished difference Result 84 states and 129 transitions. [2019-11-24 04:51:36,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:51:36,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-24 04:51:36,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:51:36,328 INFO L225 Difference]: With dead ends: 84 [2019-11-24 04:51:36,328 INFO L226 Difference]: Without dead ends: 74 [2019-11-24 04:51:36,329 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 04:51:36,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-11-24 04:51:36,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2019-11-24 04:51:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-24 04:51:36,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 112 transitions. [2019-11-24 04:51:36,341 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 112 transitions. Word has length 12 [2019-11-24 04:51:36,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:51:36,341 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 112 transitions. [2019-11-24 04:51:36,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:51:36,341 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 112 transitions. [2019-11-24 04:51:36,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:51:36,343 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:51:36,343 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:51:36,344 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:51:36,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:51:36,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1071120074, now seen corresponding path program 1 times [2019-11-24 04:51:36,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:51:36,345 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228214844] [2019-11-24 04:51:36,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:51:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:51:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:51:36,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228214844] [2019-11-24 04:51:36,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:51:36,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:51:36,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097514429] [2019-11-24 04:51:36,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:51:36,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:51:36,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:51:36,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:51:36,421 INFO L87 Difference]: Start difference. First operand 66 states and 112 transitions. Second operand 3 states. [2019-11-24 04:51:36,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:51:36,448 INFO L93 Difference]: Finished difference Result 188 states and 324 transitions. [2019-11-24 04:51:36,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:51:36,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-24 04:51:36,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:51:36,451 INFO L225 Difference]: With dead ends: 188 [2019-11-24 04:51:36,451 INFO L226 Difference]: Without dead ends: 126 [2019-11-24 04:51:36,452 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 04:51:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-11-24 04:51:36,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 112. [2019-11-24 04:51:36,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-24 04:51:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 200 transitions. [2019-11-24 04:51:36,471 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 200 transitions. Word has length 13 [2019-11-24 04:51:36,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:51:36,471 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 200 transitions. [2019-11-24 04:51:36,471 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:51:36,471 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 200 transitions. [2019-11-24 04:51:36,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-24 04:51:36,474 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:51:36,474 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:51:36,474 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:51:36,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:51:36,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1989497495, now seen corresponding path program 1 times [2019-11-24 04:51:36,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:51:36,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495896821] [2019-11-24 04:51:36,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:51:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:51:36,578 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 04:51:36,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495896821] [2019-11-24 04:51:36,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058907855] [2019-11-24 04:51:36,579 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 04:51:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:51:36,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:51:36,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:51:36,979 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 04:51:36,979 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:51:36,998 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 04:51:36,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [525342135] [2019-11-24 04:51:37,030 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-11-24 04:51:37,030 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:51:37,036 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:51:37,043 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:51:37,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:52:13,511 WARN L192 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 664 [2019-11-24 04:52:16,869 WARN L192 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 286 DAG size of output: 233 [2019-11-24 04:52:17,245 WARN L192 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 700 [2019-11-24 04:52:19,650 WARN L192 SmtUtils]: Spent 1.95 s on a formula simplification that was a NOOP. DAG size: 1052 [2019-11-24 04:52:48,167 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 11448 conjuctions. This might take some time...