/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/minepump_spec1_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:19:41,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:19:41,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:19:41,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:19:41,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:19:41,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:19:41,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:19:41,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:19:41,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:19:41,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:19:41,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:19:41,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:19:41,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:19:41,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:19:41,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:19:41,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:19:41,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:19:41,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:19:41,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:19:41,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:19:41,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:19:41,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:19:41,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:19:41,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:19:41,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:19:41,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:19:41,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:19:41,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:19:41,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:19:41,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:19:41,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:19:41,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:19:41,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:19:41,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:19:41,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:19:41,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:19:41,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 05:19:41,118 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:19:41,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:19:41,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:19:41,120 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:19:41,120 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:19:41,120 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:19:41,120 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:19:41,120 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:19:41,121 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:19:41,121 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:19:41,121 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:19:41,121 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:19:41,121 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:19:41,122 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:19:41,122 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:19:41,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:19:41,123 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:19:41,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:19:41,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:19:41,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:19:41,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:19:41,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:19:41,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:19:41,124 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:19:41,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:19:41,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:19:41,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:19:41,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:19:41,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:19:41,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:19:41,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:19:41,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:19:41,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:19:41,128 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:19:41,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:19:41,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:19:41,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:19:41,128 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:19:41,398 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:19:41,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:19:41,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:19:41,415 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:19:41,416 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:19:41,416 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2019-11-24 05:19:41,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4943dd3e/46be3cd7fc734ae396fe50ad6fe36047/FLAGeff9d4178 [2019-11-24 05:19:41,983 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:19:41,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2019-11-24 05:19:41,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4943dd3e/46be3cd7fc734ae396fe50ad6fe36047/FLAGeff9d4178 [2019-11-24 05:19:42,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4943dd3e/46be3cd7fc734ae396fe50ad6fe36047 [2019-11-24 05:19:42,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:19:42,321 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:19:42,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:19:42,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:19:42,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:19:42,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:19:42" (1/1) ... [2019-11-24 05:19:42,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ad34fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:42, skipping insertion in model container [2019-11-24 05:19:42,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:19:42" (1/1) ... [2019-11-24 05:19:42,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:19:42,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:19:42,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:19:42,866 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:19:42,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:19:42,997 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:19:42,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:42 WrapperNode [2019-11-24 05:19:42,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:19:42,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:19:42,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:19:42,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:19:43,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:42" (1/1) ... [2019-11-24 05:19:43,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:42" (1/1) ... [2019-11-24 05:19:43,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:19:43,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:19:43,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:19:43,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:19:43,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:42" (1/1) ... [2019-11-24 05:19:43,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:42" (1/1) ... [2019-11-24 05:19:43,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:42" (1/1) ... [2019-11-24 05:19:43,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:42" (1/1) ... [2019-11-24 05:19:43,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:42" (1/1) ... [2019-11-24 05:19:43,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:42" (1/1) ... [2019-11-24 05:19:43,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:42" (1/1) ... [2019-11-24 05:19:43,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:19:43,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:19:43,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:19:43,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:19:43,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:19:43,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:19:43,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:19:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:19:43,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:19:47,474 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:19:47,475 INFO L284 CfgBuilder]: Removed 350 assume(true) statements. [2019-11-24 05:19:47,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:19:47 BoogieIcfgContainer [2019-11-24 05:19:47,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:19:47,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:19:47,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:19:47,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:19:47,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:19:42" (1/3) ... [2019-11-24 05:19:47,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9794af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:19:47, skipping insertion in model container [2019-11-24 05:19:47,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:42" (2/3) ... [2019-11-24 05:19:47,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9794af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:19:47, skipping insertion in model container [2019-11-24 05:19:47,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:19:47" (3/3) ... [2019-11-24 05:19:47,485 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product62.cil.c [2019-11-24 05:19:47,495 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:19:47,502 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:19:47,510 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:19:47,531 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:19:47,531 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:19:47,532 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:19:47,532 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:19:47,532 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:19:47,532 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:19:47,532 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:19:47,532 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:19:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-24 05:19:47,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:19:47,552 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:19:47,553 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:19:47,554 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:19:47,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:19:47,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1245115647, now seen corresponding path program 1 times [2019-11-24 05:19:47,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:19:47,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900381343] [2019-11-24 05:19:47,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:19:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:19:48,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:19:48,039 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900381343] [2019-11-24 05:19:48,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:19:48,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:19:48,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301410833] [2019-11-24 05:19:48,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:19:48,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:19:48,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:19:48,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:19:48,072 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-11-24 05:19:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:19:48,371 INFO L93 Difference]: Finished difference Result 73 states and 105 transitions. [2019-11-24 05:19:48,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:19:48,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-24 05:19:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:19:48,385 INFO L225 Difference]: With dead ends: 73 [2019-11-24 05:19:48,385 INFO L226 Difference]: Without dead ends: 44 [2019-11-24 05:19:48,389 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 05:19:48,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-24 05:19:48,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2019-11-24 05:19:48,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-24 05:19:48,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2019-11-24 05:19:48,433 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 7 [2019-11-24 05:19:48,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:19:48,434 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2019-11-24 05:19:48,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:19:48,434 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2019-11-24 05:19:48,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 05:19:48,435 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:19:48,435 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:19:48,436 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:19:48,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:19:48,436 INFO L82 PathProgramCache]: Analyzing trace with hash 782994992, now seen corresponding path program 1 times [2019-11-24 05:19:48,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:19:48,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371466265] [2019-11-24 05:19:48,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:19:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:19:48,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:19:48,735 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371466265] [2019-11-24 05:19:48,735 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617556214] [2019-11-24 05:19:48,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:19:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:19:48,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 37 conjunts are in the unsatisfiable core [2019-11-24 05:19:48,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:19:49,233 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-11-24 05:19:49,429 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-11-24 05:19:49,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,468 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,477 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,502 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,512 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,581 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,589 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:19:49,669 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:19:49,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,693 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,698 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,701 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,703 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,708 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,740 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,747 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,757 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,761 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,767 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,769 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,772 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,775 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:19:49,913 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1046783251] [2019-11-24 05:19:49,966 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 05:19:49,966 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:19:49,978 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:19:49,985 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:19:49,985 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:19:59,141 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:20:00,808 WARN L192 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:20:00,984 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:20:01,620 WARN L192 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 594 DAG size of output: 594 [2019-11-24 05:20:03,127 WARN L192 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 695 [2019-11-24 05:20:08,520 WARN L192 SmtUtils]: Spent 3.39 s on a formula simplification. DAG size of input: 933 DAG size of output: 902 [2019-11-24 05:20:11,494 WARN L192 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 933 DAG size of output: 902 [2019-11-24 05:20:13,761 WARN L192 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 897 DAG size of output: 896 [2019-11-24 05:20:13,768 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:20:18,467 WARN L192 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 484 DAG size of output: 429 [2019-11-24 05:20:44,046 WARN L192 SmtUtils]: Spent 24.77 s on a formula simplification. DAG size of input: 884 DAG size of output: 502