/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_spec27_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:58:17,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:58:17,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:58:17,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:58:17,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:58:17,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:58:17,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:58:17,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:58:17,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:58:17,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:58:17,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:58:17,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:58:17,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:58:17,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:58:17,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:58:17,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:58:17,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:58:17,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:58:17,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:58:17,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:58:17,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:58:17,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:58:17,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:58:17,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:58:17,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 04:58:17,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 04:58:17,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 04:58:17,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 04:58:17,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 04:58:17,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 04:58:17,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:58:17,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:58:17,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:58:17,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:58:17,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:58:17,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:58:17,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:58:17,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:58:17,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:58:17,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:58:17,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:58:17,464 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 04:58:17,494 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:58:17,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:58:17,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:58:17,496 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:58:17,496 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:58:17,496 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:58:17,496 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:58:17,497 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:58:17,497 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:58:17,497 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:58:17,497 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:58:17,497 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:58:17,498 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:58:17,499 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:58:17,499 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:58:17,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:58:17,500 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:58:17,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:58:17,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:58:17,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:58:17,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:58:17,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:58:17,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:58:17,504 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:58:17,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:58:17,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:58:17,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:58:17,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:58:17,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:58:17,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:58:17,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:58:17,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:58:17,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:58:17,509 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:58:17,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:58:17,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:58:17,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:58:17,509 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:58:17,786 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:58:17,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:58:17,802 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:58:17,804 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:58:17,804 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:58:17,805 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product34.cil.c [2019-11-24 04:58:17,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abb0f838a/cfdb3965e5e8468e9b371a2ce6e646e3/FLAG71a6b7807 [2019-11-24 04:58:18,577 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:58:18,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product34.cil.c [2019-11-24 04:58:18,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abb0f838a/cfdb3965e5e8468e9b371a2ce6e646e3/FLAG71a6b7807 [2019-11-24 04:58:18,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abb0f838a/cfdb3965e5e8468e9b371a2ce6e646e3 [2019-11-24 04:58:18,773 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:58:18,775 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:58:18,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:58:18,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:58:18,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:58:18,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:58:18" (1/1) ... [2019-11-24 04:58:18,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10cc0d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:18, skipping insertion in model container [2019-11-24 04:58:18,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:58:18" (1/1) ... [2019-11-24 04:58:18,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:58:18,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:58:19,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:58:19,789 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:58:19,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:58:19,996 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:58:19,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:19 WrapperNode [2019-11-24 04:58:19,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:58:19,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:58:19,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:58:19,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:58:20,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:19" (1/1) ... [2019-11-24 04:58:20,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:19" (1/1) ... [2019-11-24 04:58:20,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:58:20,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:58:20,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:58:20,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:58:20,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:19" (1/1) ... [2019-11-24 04:58:20,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:19" (1/1) ... [2019-11-24 04:58:20,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:19" (1/1) ... [2019-11-24 04:58:20,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:19" (1/1) ... [2019-11-24 04:58:20,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:19" (1/1) ... [2019-11-24 04:58:20,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:19" (1/1) ... [2019-11-24 04:58:20,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:19" (1/1) ... [2019-11-24 04:58:20,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:58:20,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:58:20,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:58:20,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:58:20,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:19" (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 04:58:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:58:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:58:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:58:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:58:20,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:58:42,068 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:58:42,069 INFO L284 CfgBuilder]: Removed 861 assume(true) statements. [2019-11-24 04:58:42,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:58:42 BoogieIcfgContainer [2019-11-24 04:58:42,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:58:42,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:58:42,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:58:42,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:58:42,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:58:18" (1/3) ... [2019-11-24 04:58:42,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d87352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:58:42, skipping insertion in model container [2019-11-24 04:58:42,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:58:19" (2/3) ... [2019-11-24 04:58:42,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d87352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:58:42, skipping insertion in model container [2019-11-24 04:58:42,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:58:42" (3/3) ... [2019-11-24 04:58:42,083 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product34.cil.c [2019-11-24 04:58:42,092 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:58:42,100 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 04:58:42,112 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 04:58:42,139 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:58:42,140 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:58:42,140 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:58:42,140 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:58:42,140 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:58:42,140 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:58:42,140 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:58:42,141 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:58:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 04:58:42,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:58:42,169 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:42,171 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:58:42,171 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 04:58:42,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:42,178 INFO L82 PathProgramCache]: Analyzing trace with hash 2145235392, now seen corresponding path program 1 times [2019-11-24 04:58:42,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:42,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436874197] [2019-11-24 04:58:42,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:42,632 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 04:58:42,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436874197] [2019-11-24 04:58:42,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:58:42,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:58:42,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365962766] [2019-11-24 04:58:42,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:58:42,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:58:42,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:58:42,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:58:42,657 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 04:58:42,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:58:42,690 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 04:58:42,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:58:42,692 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 04:58:42,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:58:42,707 INFO L225 Difference]: With dead ends: 100 [2019-11-24 04:58:42,708 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 04:58:42,712 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 04:58:42,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 04:58:42,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 04:58:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 04:58:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 04:58:42,772 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 04:58:42,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:58:42,773 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 04:58:42,773 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:58:42,773 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 04:58:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 04:58:42,774 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:42,775 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:58:42,775 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 04:58:42,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:42,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1022029004, now seen corresponding path program 1 times [2019-11-24 04:58:42,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:42,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718057387] [2019-11-24 04:58:42,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:43,046 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 04:58:43,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718057387] [2019-11-24 04:58:43,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:58:43,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:58:43,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028005219] [2019-11-24 04:58:43,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:58:43,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:58:43,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:58:43,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:58:43,052 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 04:58:43,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:58:43,073 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 04:58:43,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:58:43,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 04:58:43,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:58:43,078 INFO L225 Difference]: With dead ends: 94 [2019-11-24 04:58:43,078 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 04:58:43,079 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 04:58:43,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 04:58:43,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 04:58:43,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 04:58:43,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 04:58:43,100 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 04:58:43,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:58:43,100 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 04:58:43,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:58:43,100 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 04:58:43,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:58:43,101 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:43,101 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:58:43,103 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 04:58:43,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:43,104 INFO L82 PathProgramCache]: Analyzing trace with hash 391626044, now seen corresponding path program 1 times [2019-11-24 04:58:43,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:43,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443157386] [2019-11-24 04:58:43,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:43,314 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 04:58:43,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443157386] [2019-11-24 04:58:43,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:58:43,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:58:43,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914351786] [2019-11-24 04:58:43,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:58:43,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:58:43,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:58:43,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:58:43,316 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 5 states. [2019-11-24 04:58:43,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:58:43,595 INFO L93 Difference]: Finished difference Result 136 states and 190 transitions. [2019-11-24 04:58:43,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:58:43,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 04:58:43,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:58:43,607 INFO L225 Difference]: With dead ends: 136 [2019-11-24 04:58:43,607 INFO L226 Difference]: Without dead ends: 110 [2019-11-24 04:58:43,608 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 04:58:43,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-24 04:58:43,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2019-11-24 04:58:43,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-24 04:58:43,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 137 transitions. [2019-11-24 04:58:43,631 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 137 transitions. Word has length 13 [2019-11-24 04:58:43,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:58:43,631 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 137 transitions. [2019-11-24 04:58:43,632 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:58:43,632 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 137 transitions. [2019-11-24 04:58:43,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:58:43,633 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:43,638 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:58:43,639 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 04:58:43,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:43,639 INFO L82 PathProgramCache]: Analyzing trace with hash 390563773, now seen corresponding path program 1 times [2019-11-24 04:58:43,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:43,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009035246] [2019-11-24 04:58:43,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:44,136 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 04:58:44,136 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009035246] [2019-11-24 04:58:44,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:58:44,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 04:58:44,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7178683] [2019-11-24 04:58:44,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:58:44,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:58:44,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:58:44,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:58:44,138 INFO L87 Difference]: Start difference. First operand 87 states and 137 transitions. Second operand 6 states. [2019-11-24 04:58:44,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:58:44,677 INFO L93 Difference]: Finished difference Result 171 states and 271 transitions. [2019-11-24 04:58:44,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 04:58:44,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-24 04:58:44,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:58:44,680 INFO L225 Difference]: With dead ends: 171 [2019-11-24 04:58:44,680 INFO L226 Difference]: Without dead ends: 151 [2019-11-24 04:58:44,681 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-11-24 04:58:44,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-11-24 04:58:44,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 140. [2019-11-24 04:58:44,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-11-24 04:58:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 237 transitions. [2019-11-24 04:58:44,699 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 237 transitions. Word has length 13 [2019-11-24 04:58:44,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:58:44,699 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 237 transitions. [2019-11-24 04:58:44,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 04:58:44,700 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 237 transitions. [2019-11-24 04:58:44,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 04:58:44,701 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:44,701 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:58:44,701 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 04:58:44,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:44,702 INFO L82 PathProgramCache]: Analyzing trace with hash -2086596620, now seen corresponding path program 1 times [2019-11-24 04:58:44,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:44,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882979544] [2019-11-24 04:58:44,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:44,761 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 04:58:44,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882979544] [2019-11-24 04:58:44,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:58:44,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:58:44,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007001280] [2019-11-24 04:58:44,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:58:44,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:58:44,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:58:44,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:58:44,764 INFO L87 Difference]: Start difference. First operand 140 states and 237 transitions. Second operand 3 states. [2019-11-24 04:58:44,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:58:44,792 INFO L93 Difference]: Finished difference Result 408 states and 695 transitions. [2019-11-24 04:58:44,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:58:44,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-24 04:58:44,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:58:44,795 INFO L225 Difference]: With dead ends: 408 [2019-11-24 04:58:44,795 INFO L226 Difference]: Without dead ends: 272 [2019-11-24 04:58:44,796 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 04:58:44,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2019-11-24 04:58:44,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 232. [2019-11-24 04:58:44,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2019-11-24 04:58:44,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 413 transitions. [2019-11-24 04:58:44,824 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 413 transitions. Word has length 16 [2019-11-24 04:58:44,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:58:44,825 INFO L462 AbstractCegarLoop]: Abstraction has 232 states and 413 transitions. [2019-11-24 04:58:44,825 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:58:44,825 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 413 transitions. [2019-11-24 04:58:44,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 04:58:44,827 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:44,827 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:58:44,827 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 04:58:44,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:44,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1967927399, now seen corresponding path program 1 times [2019-11-24 04:58:44,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:44,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134717661] [2019-11-24 04:58:44,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:44,931 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 04:58:44,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134717661] [2019-11-24 04:58:44,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:58:44,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:58:44,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931687071] [2019-11-24 04:58:44,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:58:44,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:58:44,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:58:44,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:58:44,933 INFO L87 Difference]: Start difference. First operand 232 states and 413 transitions. Second operand 3 states. [2019-11-24 04:58:44,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:58:44,967 INFO L93 Difference]: Finished difference Result 680 states and 1215 transitions. [2019-11-24 04:58:44,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:58:44,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-24 04:58:44,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:58:44,970 INFO L225 Difference]: With dead ends: 680 [2019-11-24 04:58:44,971 INFO L226 Difference]: Without dead ends: 452 [2019-11-24 04:58:44,974 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 04:58:44,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2019-11-24 04:58:45,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 412. [2019-11-24 04:58:45,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2019-11-24 04:58:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 753 transitions. [2019-11-24 04:58:45,018 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 753 transitions. Word has length 17 [2019-11-24 04:58:45,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:58:45,019 INFO L462 AbstractCegarLoop]: Abstraction has 412 states and 753 transitions. [2019-11-24 04:58:45,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:58:45,019 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 753 transitions. [2019-11-24 04:58:45,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-24 04:58:45,027 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:45,028 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 04:58:45,029 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 04:58:45,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:45,031 INFO L82 PathProgramCache]: Analyzing trace with hash -334184734, now seen corresponding path program 1 times [2019-11-24 04:58:45,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:45,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093300783] [2019-11-24 04:58:45,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:45,107 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 04:58:45,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093300783] [2019-11-24 04:58:45,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:58:45,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:58:45,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567483970] [2019-11-24 04:58:45,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:58:45,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:58:45,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:58:45,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:58:45,109 INFO L87 Difference]: Start difference. First operand 412 states and 753 transitions. Second operand 3 states. [2019-11-24 04:58:45,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:58:45,175 INFO L93 Difference]: Finished difference Result 1212 states and 2219 transitions. [2019-11-24 04:58:45,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:58:45,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-24 04:58:45,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:58:45,181 INFO L225 Difference]: With dead ends: 1212 [2019-11-24 04:58:45,182 INFO L226 Difference]: Without dead ends: 804 [2019-11-24 04:58:45,184 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 04:58:45,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2019-11-24 04:58:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 764. [2019-11-24 04:58:45,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2019-11-24 04:58:45,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1409 transitions. [2019-11-24 04:58:45,254 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1409 transitions. Word has length 18 [2019-11-24 04:58:45,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:58:45,255 INFO L462 AbstractCegarLoop]: Abstraction has 764 states and 1409 transitions. [2019-11-24 04:58:45,255 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:58:45,255 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1409 transitions. [2019-11-24 04:58:45,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-24 04:58:45,257 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:45,257 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 04:58:45,257 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 04:58:45,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:45,258 INFO L82 PathProgramCache]: Analyzing trace with hash 766303965, now seen corresponding path program 1 times [2019-11-24 04:58:45,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:45,260 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938711924] [2019-11-24 04:58:45,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:46,000 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 04:58:46,001 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938711924] [2019-11-24 04:58:46,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:58:46,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-24 04:58:46,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330684335] [2019-11-24 04:58:46,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-24 04:58:46,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:58:46,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-24 04:58:46,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-24 04:58:46,003 INFO L87 Difference]: Start difference. First operand 764 states and 1409 transitions. Second operand 11 states. [2019-11-24 04:58:47,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:58:47,740 INFO L93 Difference]: Finished difference Result 1519 states and 2809 transitions. [2019-11-24 04:58:47,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-24 04:58:47,741 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2019-11-24 04:58:47,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:58:47,754 INFO L225 Difference]: With dead ends: 1519 [2019-11-24 04:58:47,755 INFO L226 Difference]: Without dead ends: 1515 [2019-11-24 04:58:47,757 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2019-11-24 04:58:47,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2019-11-24 04:58:47,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1498. [2019-11-24 04:58:47,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1498 states. [2019-11-24 04:58:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2786 transitions. [2019-11-24 04:58:47,945 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2786 transitions. Word has length 18 [2019-11-24 04:58:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:58:47,946 INFO L462 AbstractCegarLoop]: Abstraction has 1498 states and 2786 transitions. [2019-11-24 04:58:47,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-24 04:58:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2786 transitions. [2019-11-24 04:58:47,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-24 04:58:47,948 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:47,949 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 04:58:47,949 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 04:58:47,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:47,950 INFO L82 PathProgramCache]: Analyzing trace with hash 767166348, now seen corresponding path program 1 times [2019-11-24 04:58:47,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:47,951 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009898017] [2019-11-24 04:58:47,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:48,369 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 04:58:48,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009898017] [2019-11-24 04:58:48,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:58:48,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-24 04:58:48,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765221715] [2019-11-24 04:58:48,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-24 04:58:48,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:58:48,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-24 04:58:48,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-24 04:58:48,371 INFO L87 Difference]: Start difference. First operand 1498 states and 2786 transitions. Second operand 8 states. [2019-11-24 04:58:49,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:58:49,135 INFO L93 Difference]: Finished difference Result 1523 states and 2812 transitions. [2019-11-24 04:58:49,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 04:58:49,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-11-24 04:58:49,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:58:49,150 INFO L225 Difference]: With dead ends: 1523 [2019-11-24 04:58:49,151 INFO L226 Difference]: Without dead ends: 1499 [2019-11-24 04:58:49,152 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2019-11-24 04:58:49,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2019-11-24 04:58:49,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1490. [2019-11-24 04:58:49,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2019-11-24 04:58:49,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2752 transitions. [2019-11-24 04:58:49,329 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2752 transitions. Word has length 18 [2019-11-24 04:58:49,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:58:49,332 INFO L462 AbstractCegarLoop]: Abstraction has 1490 states and 2752 transitions. [2019-11-24 04:58:49,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-24 04:58:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2752 transitions. [2019-11-24 04:58:49,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-24 04:58:49,333 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:49,334 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 04:58:49,334 INFO L410 AbstractCegarLoop]: === Iteration 10 === [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 04:58:49,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:49,335 INFO L82 PathProgramCache]: Analyzing trace with hash 700674971, now seen corresponding path program 1 times [2019-11-24 04:58:49,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:49,335 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685795098] [2019-11-24 04:58:49,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:49,689 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 04:58:49,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685795098] [2019-11-24 04:58:49,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324512053] [2019-11-24 04:58:49,690 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 04:58:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:50,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:58:50,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:58:50,178 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 04:58:50,178 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:58:50,210 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 04:58:50,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [295905717] [2019-11-24 04:58:50,325 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-11-24 04:58:50,326 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:58:50,331 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:58:50,338 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:58:50,339 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:59:44,876 WARN L192 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 709