/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_spec9_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:16:08,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:16:08,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:16:08,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:16:08,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:16:08,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:16:08,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:16:08,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:16:08,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:16:08,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:16:08,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:16:08,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:16:08,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:16:08,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:16:08,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:16:08,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:16:08,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:16:08,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:16:08,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:16:08,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:16:08,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:16:08,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:16:08,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:16:08,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:16:08,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:16:08,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:16:08,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:16:08,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:16:08,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:16:08,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:16:08,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:16:08,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:16:08,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:16:08,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:16:08,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:16:08,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:16:08,905 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 05:16:08,920 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:16:08,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:16:08,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:16:08,921 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:16:08,921 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:16:08,921 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:16:08,922 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:16:08,922 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:16:08,922 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:16:08,922 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:16:08,922 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:16:08,923 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:16:08,923 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:16:08,923 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:16:08,923 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:16:08,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:16:08,924 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:16:08,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:16:08,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:16:08,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:16:08,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:16:08,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:16:08,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:16:08,925 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:16:08,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:16:08,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:16:08,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:16:08,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:16:08,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:16:08,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:16:08,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:16:08,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:16:08,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:16:08,927 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:16:08,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:16:08,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:16:08,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:16:08,928 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:16:09,181 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:16:09,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:16:09,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:16:09,201 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:16:09,202 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:16:09,202 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product34.cil.c [2019-11-24 05:16:09,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/487ef9bfb/dc39d5296df447b781d5797a540ff1ef/FLAG68fd9e523 [2019-11-24 05:16:09,882 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:16:09,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product34.cil.c [2019-11-24 05:16:09,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/487ef9bfb/dc39d5296df447b781d5797a540ff1ef/FLAG68fd9e523 [2019-11-24 05:16:10,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/487ef9bfb/dc39d5296df447b781d5797a540ff1ef [2019-11-24 05:16:10,128 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:16:10,130 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:16:10,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:16:10,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:16:10,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:16:10,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:16:10" (1/1) ... [2019-11-24 05:16:10,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9375a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:10, skipping insertion in model container [2019-11-24 05:16:10,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:16:10" (1/1) ... [2019-11-24 05:16:10,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:16:10,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:16:11,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:16:11,087 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:16:11,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:16:11,406 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:16:11,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:11 WrapperNode [2019-11-24 05:16:11,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:16:11,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:16:11,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:16:11,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:16:11,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:11" (1/1) ... [2019-11-24 05:16:11,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:11" (1/1) ... [2019-11-24 05:16:11,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:16:11,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:16:11,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:16:11,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:16:11,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:11" (1/1) ... [2019-11-24 05:16:11,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:11" (1/1) ... [2019-11-24 05:16:11,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:11" (1/1) ... [2019-11-24 05:16:11,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:11" (1/1) ... [2019-11-24 05:16:11,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:11" (1/1) ... [2019-11-24 05:16:11,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:11" (1/1) ... [2019-11-24 05:16:11,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:11" (1/1) ... [2019-11-24 05:16:11,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:16:11,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:16:11,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:16:11,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:16:11,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:11" (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 05:16:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:16:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:16:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:16:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:16:12,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:16:33,362 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:16:33,363 INFO L284 CfgBuilder]: Removed 861 assume(true) statements. [2019-11-24 05:16:33,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:16:33 BoogieIcfgContainer [2019-11-24 05:16:33,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:16:33,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:16:33,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:16:33,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:16:33,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:16:10" (1/3) ... [2019-11-24 05:16:33,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6ca951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:16:33, skipping insertion in model container [2019-11-24 05:16:33,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:16:11" (2/3) ... [2019-11-24 05:16:33,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6ca951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:16:33, skipping insertion in model container [2019-11-24 05:16:33,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:16:33" (3/3) ... [2019-11-24 05:16:33,372 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product34.cil.c [2019-11-24 05:16:33,381 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:16:33,389 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 05:16:33,400 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 05:16:33,421 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:16:33,422 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:16:33,422 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:16:33,422 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:16:33,422 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:16:33,422 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:16:33,422 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:16:33,422 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:16:33,436 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 05:16:33,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:16:33,443 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:16:33,444 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:16:33,444 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 05:16:33,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:16:33,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1368996944, now seen corresponding path program 1 times [2019-11-24 05:16:33,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:16:33,461 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984257455] [2019-11-24 05:16:33,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:16:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:33,848 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 05:16:33,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984257455] [2019-11-24 05:16:33,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:16:33,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:16:33,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479106928] [2019-11-24 05:16:33,855 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:16:33,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:16:33,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:16:33,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:16:33,872 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 05:16:33,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:16:33,899 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 05:16:33,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:16:33,901 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:16:33,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:16:33,913 INFO L225 Difference]: With dead ends: 100 [2019-11-24 05:16:33,913 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 05:16:33,916 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 05:16:33,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 05:16:33,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 05:16:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 05:16:33,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 05:16:33,962 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 05:16:33,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:16:33,962 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 05:16:33,962 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:16:33,963 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 05:16:33,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:16:33,963 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:16:33,964 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:16:33,964 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 05:16:33,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:16:33,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1168605541, now seen corresponding path program 1 times [2019-11-24 05:16:33,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:16:33,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449769335] [2019-11-24 05:16:33,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:16:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:34,119 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 05:16:34,119 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449769335] [2019-11-24 05:16:34,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:16:34,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:16:34,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971553095] [2019-11-24 05:16:34,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:16:34,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:16:34,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:16:34,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:16:34,124 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 05:16:34,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:16:34,147 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 05:16:34,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:16:34,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 05:16:34,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:16:34,150 INFO L225 Difference]: With dead ends: 94 [2019-11-24 05:16:34,151 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 05:16:34,153 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 05:16:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 05:16:34,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 05:16:34,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 05:16:34,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 05:16:34,175 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 05:16:34,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:16:34,175 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 05:16:34,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:16:34,177 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 05:16:34,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:16:34,179 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:16:34,180 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:16:34,180 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 05:16:34,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:16:34,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1915952400, now seen corresponding path program 1 times [2019-11-24 05:16:34,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:16:34,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393368477] [2019-11-24 05:16:34,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:16:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:34,395 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 05:16:34,396 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393368477] [2019-11-24 05:16:34,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:16:34,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:16:34,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309246434] [2019-11-24 05:16:34,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:16:34,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:16:34,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:16:34,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:16:34,398 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 3 states. [2019-11-24 05:16:34,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:16:34,562 INFO L93 Difference]: Finished difference Result 86 states and 114 transitions. [2019-11-24 05:16:34,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:16:34,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-24 05:16:34,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:16:34,567 INFO L225 Difference]: With dead ends: 86 [2019-11-24 05:16:34,569 INFO L226 Difference]: Without dead ends: 57 [2019-11-24 05:16:34,570 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:16:34,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-24 05:16:34,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2019-11-24 05:16:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-24 05:16:34,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2019-11-24 05:16:34,582 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 13 [2019-11-24 05:16:34,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:16:34,582 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2019-11-24 05:16:34,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:16:34,583 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2019-11-24 05:16:34,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 05:16:34,585 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:16:34,585 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:16:34,585 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 05:16:34,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:16:34,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1606576048, now seen corresponding path program 1 times [2019-11-24 05:16:34,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:16:34,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40380264] [2019-11-24 05:16:34,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:16:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:35,198 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 05:16:35,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40380264] [2019-11-24 05:16:35,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:16:35,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-24 05:16:35,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093040454] [2019-11-24 05:16:35,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-24 05:16:35,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:16:35,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-24 05:16:35,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-24 05:16:35,202 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand 8 states. [2019-11-24 05:16:36,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:16:36,219 INFO L93 Difference]: Finished difference Result 132 states and 206 transitions. [2019-11-24 05:16:36,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:16:36,220 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-24 05:16:36,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:16:36,225 INFO L225 Difference]: With dead ends: 132 [2019-11-24 05:16:36,225 INFO L226 Difference]: Without dead ends: 112 [2019-11-24 05:16:36,226 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2019-11-24 05:16:36,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-24 05:16:36,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2019-11-24 05:16:36,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-24 05:16:36,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 180 transitions. [2019-11-24 05:16:36,256 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 180 transitions. Word has length 15 [2019-11-24 05:16:36,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:16:36,256 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 180 transitions. [2019-11-24 05:16:36,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-24 05:16:36,262 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 180 transitions. [2019-11-24 05:16:36,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 05:16:36,263 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:16:36,263 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:16:36,264 INFO L410 AbstractCegarLoop]: === Iteration 5 === [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 05:16:36,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:16:36,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1056763167, now seen corresponding path program 1 times [2019-11-24 05:16:36,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:16:36,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317858283] [2019-11-24 05:16:36,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:16:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:36,338 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 05:16:36,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317858283] [2019-11-24 05:16:36,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:16:36,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:16:36,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035447583] [2019-11-24 05:16:36,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:16:36,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:16:36,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:16:36,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:16:36,340 INFO L87 Difference]: Start difference. First operand 108 states and 180 transitions. Second operand 3 states. [2019-11-24 05:16:36,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:16:36,370 INFO L93 Difference]: Finished difference Result 313 states and 526 transitions. [2019-11-24 05:16:36,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:16:36,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-24 05:16:36,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:16:36,376 INFO L225 Difference]: With dead ends: 313 [2019-11-24 05:16:36,377 INFO L226 Difference]: Without dead ends: 209 [2019-11-24 05:16:36,378 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 05:16:36,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2019-11-24 05:16:36,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 177. [2019-11-24 05:16:36,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2019-11-24 05:16:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 312 transitions. [2019-11-24 05:16:36,417 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 312 transitions. Word has length 16 [2019-11-24 05:16:36,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:16:36,417 INFO L462 AbstractCegarLoop]: Abstraction has 177 states and 312 transitions. [2019-11-24 05:16:36,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:16:36,418 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 312 transitions. [2019-11-24 05:16:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 05:16:36,423 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:16:36,423 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:16:36,424 INFO L410 AbstractCegarLoop]: === Iteration 6 === [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 05:16:36,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:16:36,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1953398312, now seen corresponding path program 1 times [2019-11-24 05:16:36,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:16:36,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174699619] [2019-11-24 05:16:36,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:16:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:36,710 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 05:16:36,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174699619] [2019-11-24 05:16:36,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:16:36,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-24 05:16:36,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54055661] [2019-11-24 05:16:36,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-24 05:16:36,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:16:36,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-24 05:16:36,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:16:36,712 INFO L87 Difference]: Start difference. First operand 177 states and 312 transitions. Second operand 7 states. [2019-11-24 05:16:37,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:16:37,832 INFO L93 Difference]: Finished difference Result 260 states and 443 transitions. [2019-11-24 05:16:37,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:16:37,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-11-24 05:16:37,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:16:37,835 INFO L225 Difference]: With dead ends: 260 [2019-11-24 05:16:37,835 INFO L226 Difference]: Without dead ends: 239 [2019-11-24 05:16:37,836 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2019-11-24 05:16:37,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2019-11-24 05:16:37,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 237. [2019-11-24 05:16:37,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2019-11-24 05:16:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 417 transitions. [2019-11-24 05:16:37,855 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 417 transitions. Word has length 17 [2019-11-24 05:16:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:16:37,855 INFO L462 AbstractCegarLoop]: Abstraction has 237 states and 417 transitions. [2019-11-24 05:16:37,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-24 05:16:37,856 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 417 transitions. [2019-11-24 05:16:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-24 05:16:37,856 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:16:37,857 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:16:37,857 INFO L410 AbstractCegarLoop]: === Iteration 7 === [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 05:16:37,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:16:37,857 INFO L82 PathProgramCache]: Analyzing trace with hash -816677066, now seen corresponding path program 1 times [2019-11-24 05:16:37,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:16:37,858 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049116124] [2019-11-24 05:16:37,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:16:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:38,105 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 05:16:38,105 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049116124] [2019-11-24 05:16:38,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:16:38,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-24 05:16:38,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335432208] [2019-11-24 05:16:38,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-24 05:16:38,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:16:38,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-24 05:16:38,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-24 05:16:38,107 INFO L87 Difference]: Start difference. First operand 237 states and 417 transitions. Second operand 8 states. [2019-11-24 05:16:38,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:16:38,840 INFO L93 Difference]: Finished difference Result 462 states and 821 transitions. [2019-11-24 05:16:38,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:16:38,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-11-24 05:16:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:16:38,845 INFO L225 Difference]: With dead ends: 462 [2019-11-24 05:16:38,845 INFO L226 Difference]: Without dead ends: 438 [2019-11-24 05:16:38,846 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2019-11-24 05:16:38,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2019-11-24 05:16:38,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 432. [2019-11-24 05:16:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2019-11-24 05:16:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 788 transitions. [2019-11-24 05:16:38,877 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 788 transitions. Word has length 18 [2019-11-24 05:16:38,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:16:38,877 INFO L462 AbstractCegarLoop]: Abstraction has 432 states and 788 transitions. [2019-11-24 05:16:38,877 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-24 05:16:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 788 transitions. [2019-11-24 05:16:38,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-24 05:16:38,879 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:16:38,879 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:16:38,879 INFO L410 AbstractCegarLoop]: === Iteration 8 === [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 05:16:38,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:16:38,880 INFO L82 PathProgramCache]: Analyzing trace with hash -6590292, now seen corresponding path program 1 times [2019-11-24 05:16:38,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:16:38,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349255147] [2019-11-24 05:16:38,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:16:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:38,951 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 05:16:38,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349255147] [2019-11-24 05:16:38,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:16:38,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:16:38,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72492795] [2019-11-24 05:16:38,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:16:38,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:16:38,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:16:38,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:16:38,953 INFO L87 Difference]: Start difference. First operand 432 states and 788 transitions. Second operand 3 states. [2019-11-24 05:16:39,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:16:39,014 INFO L93 Difference]: Finished difference Result 1272 states and 2324 transitions. [2019-11-24 05:16:39,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:16:39,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-24 05:16:39,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:16:39,019 INFO L225 Difference]: With dead ends: 1272 [2019-11-24 05:16:39,020 INFO L226 Difference]: Without dead ends: 844 [2019-11-24 05:16:39,025 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 05:16:39,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2019-11-24 05:16:39,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 794. [2019-11-24 05:16:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2019-11-24 05:16:39,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1470 transitions. [2019-11-24 05:16:39,100 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1470 transitions. Word has length 19 [2019-11-24 05:16:39,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:16:39,100 INFO L462 AbstractCegarLoop]: Abstraction has 794 states and 1470 transitions. [2019-11-24 05:16:39,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:16:39,101 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1470 transitions. [2019-11-24 05:16:39,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-24 05:16:39,102 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:16:39,103 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:16:39,103 INFO L410 AbstractCegarLoop]: === Iteration 9 === [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 05:16:39,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:16:39,104 INFO L82 PathProgramCache]: Analyzing trace with hash -186958004, now seen corresponding path program 1 times [2019-11-24 05:16:39,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:16:39,105 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639573335] [2019-11-24 05:16:39,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:16:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:39,667 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 05:16:39,667 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639573335] [2019-11-24 05:16:39,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142737224] [2019-11-24 05:16:39,668 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 05:16:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:16:40,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:16:40,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:16:40,379 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 05:16:40,379 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:16:40,425 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 05:16:40,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1278779442] [2019-11-24 05:16:40,478 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-11-24 05:16:40,478 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:16:40,485 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:16:40,495 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:16:40,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs