/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec11_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:51:51,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:51:51,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:51:51,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:51:51,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:51:51,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:51:51,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:51:51,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:51:51,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:51:51,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:51:51,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:51:51,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:51:51,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:51:51,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:51:51,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:51:51,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:51:51,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:51:51,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:51:51,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:51:51,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:51:51,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:51:51,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:51:51,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:51:51,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:51:51,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:51:51,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:51:51,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:51:51,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:51:51,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:51:51,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:51:51,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:51:51,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:51:51,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:51:51,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:51:51,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:51:51,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:51:51,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:51:51,219 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:51:51,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:51:51,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:51:51,220 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:51:51,221 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:51:51,221 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:51:51,221 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:51:51,221 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:51:51,221 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:51:51,221 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:51:51,225 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:51:51,225 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:51:51,225 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:51:51,225 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:51:51,226 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:51:51,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:51:51,227 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:51:51,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:51:51,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:51:51,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:51:51,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:51:51,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:51:51,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:51:51,231 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:51:51,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:51:51,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:51:51,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:51:51,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:51:51,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:51:51,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:51:51,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:51:51,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:51:51,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:51:51,234 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:51:51,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:51:51,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:51:51,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:51:51,235 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:51:51,512 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:51:51,530 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:51:51,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:51:51,535 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:51:51,536 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:51:51,536 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product32.cil.c [2019-11-24 04:51:51,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd13c1ba/610f6385e05d496c8b386d60f0c1918e/FLAG5c8289437 [2019-11-24 04:51:52,165 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:51:52,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product32.cil.c [2019-11-24 04:51:52,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd13c1ba/610f6385e05d496c8b386d60f0c1918e/FLAG5c8289437 [2019-11-24 04:51:52,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd13c1ba/610f6385e05d496c8b386d60f0c1918e [2019-11-24 04:51:52,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:51:52,428 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:51:52,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:51:52,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:51:52,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:51:52,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:51:52" (1/1) ... [2019-11-24 04:51:52,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8a69ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:52, skipping insertion in model container [2019-11-24 04:51:52,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:51:52" (1/1) ... [2019-11-24 04:51:52,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:51:52,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:51:53,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:51:53,335 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:51:53,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:51:53,528 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:51:53,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:53 WrapperNode [2019-11-24 04:51:53,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:51:53,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:51:53,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:51:53,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:51:53,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:53" (1/1) ... [2019-11-24 04:51:53,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:53" (1/1) ... [2019-11-24 04:51:53,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:51:53,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:51:53,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:51:53,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:51:53,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:53" (1/1) ... [2019-11-24 04:51:53,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:53" (1/1) ... [2019-11-24 04:51:53,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:53" (1/1) ... [2019-11-24 04:51:53,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:53" (1/1) ... [2019-11-24 04:51:53,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:53" (1/1) ... [2019-11-24 04:51:53,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:53" (1/1) ... [2019-11-24 04:51:53,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:53" (1/1) ... [2019-11-24 04:51:53,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:51:53,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:51:53,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:51:53,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:51:53,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:51:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:51:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:51:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:51:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:51:54,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:52:09,447 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:52:09,447 INFO L284 CfgBuilder]: Removed 693 assume(true) statements. [2019-11-24 04:52:09,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:52:09 BoogieIcfgContainer [2019-11-24 04:52:09,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:52:09,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:52:09,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:52:09,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:52:09,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:51:52" (1/3) ... [2019-11-24 04:52:09,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6f6ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:52:09, skipping insertion in model container [2019-11-24 04:52:09,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:51:53" (2/3) ... [2019-11-24 04:52:09,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6f6ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:52:09, skipping insertion in model container [2019-11-24 04:52:09,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:52:09" (3/3) ... [2019-11-24 04:52:09,464 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product32.cil.c [2019-11-24 04:52:09,472 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:52:09,480 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 04:52:09,488 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 04:52:09,513 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:52:09,513 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:52:09,514 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:52:09,514 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:52:09,514 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:52:09,514 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:52:09,514 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:52:09,514 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:52:09,530 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2019-11-24 04:52:09,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:52:09,536 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:52:09,537 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:52:09,537 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 04:52:09,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:52:09,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1451999816, now seen corresponding path program 1 times [2019-11-24 04:52:09,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:52:09,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478135034] [2019-11-24 04:52:09,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:52:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:52:10,052 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 04:52:10,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478135034] [2019-11-24 04:52:10,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:52:10,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:52:10,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558908480] [2019-11-24 04:52:10,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:52:10,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:52:10,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:52:10,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:52:10,071 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2019-11-24 04:52:10,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:52:10,094 INFO L93 Difference]: Finished difference Result 104 states and 157 transitions. [2019-11-24 04:52:10,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:52:10,096 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 04:52:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:52:10,107 INFO L225 Difference]: With dead ends: 104 [2019-11-24 04:52:10,108 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 04:52:10,111 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 04:52:10,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 04:52:10,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 04:52:10,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 04:52:10,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 04:52:10,156 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 8 [2019-11-24 04:52:10,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:52:10,156 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 04:52:10,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:52:10,156 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 04:52:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 04:52:10,157 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:52:10,157 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:52:10,158 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 04:52:10,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:52:10,158 INFO L82 PathProgramCache]: Analyzing trace with hash -31910486, now seen corresponding path program 1 times [2019-11-24 04:52:10,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:52:10,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303015322] [2019-11-24 04:52:10,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:52:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:52:10,312 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 04:52:10,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303015322] [2019-11-24 04:52:10,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:52:10,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:52:10,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039800086] [2019-11-24 04:52:10,316 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:52:10,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:52:10,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:52:10,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:52:10,318 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 3 states. [2019-11-24 04:52:10,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:52:10,349 INFO L93 Difference]: Finished difference Result 98 states and 130 transitions. [2019-11-24 04:52:10,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:52:10,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 04:52:10,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:52:10,352 INFO L225 Difference]: With dead ends: 98 [2019-11-24 04:52:10,353 INFO L226 Difference]: Without dead ends: 63 [2019-11-24 04:52:10,354 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 04:52:10,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-24 04:52:10,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-11-24 04:52:10,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-24 04:52:10,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 90 transitions. [2019-11-24 04:52:10,375 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 90 transitions. Word has length 9 [2019-11-24 04:52:10,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:52:10,375 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 90 transitions. [2019-11-24 04:52:10,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:52:10,375 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 90 transitions. [2019-11-24 04:52:10,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:52:10,379 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:52:10,379 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:52:10,380 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 04:52:10,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:52:10,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1972065008, now seen corresponding path program 1 times [2019-11-24 04:52:10,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:52:10,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848470767] [2019-11-24 04:52:10,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:52:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:52:10,807 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 04:52:10,807 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848470767] [2019-11-24 04:52:10,808 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605611912] [2019-11-24 04:52:10,809 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 04:52:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:52:11,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:52:11,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:52:11,346 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 04:52:11,347 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:52:11,369 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 04:52:11,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [37272611] [2019-11-24 04:52:11,395 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-24 04:52:11,395 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:52:11,401 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:52:11,408 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:52:11,409 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:53:19,209 WARN L192 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 710 [2019-11-24 04:53:24,000 WARN L192 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 321 DAG size of output: 261 [2019-11-24 04:53:24,416 WARN L192 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 752 [2019-11-24 04:53:24,591 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8