/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_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:18:09,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:18:09,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:18:09,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:18:09,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:18:09,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:18:09,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:18:09,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:18:09,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:18:09,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:18:09,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:18:09,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:18:09,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:18:09,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:18:09,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:18:09,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:18:09,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:18:09,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:18:09,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:18:09,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:18:10,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:18:10,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:18:10,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:18:10,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:18:10,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:18:10,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:18:10,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:18:10,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:18:10,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:18:10,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:18:10,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:18:10,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:18:10,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:18:10,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:18:10,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:18:10,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:18:10,027 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 05:18:10,050 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:18:10,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:18:10,051 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:18:10,052 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:18:10,052 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:18:10,052 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:18:10,052 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:18:10,053 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:18:10,053 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:18:10,053 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:18:10,054 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:18:10,054 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:18:10,054 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:18:10,055 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:18:10,055 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:18:10,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:18:10,057 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:18:10,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:18:10,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:18:10,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:18:10,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:18:10,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:18:10,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:18:10,058 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:18:10,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:18:10,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:18:10,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:18:10,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:18:10,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:18:10,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:18:10,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:18:10,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:18:10,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:18:10,061 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:18:10,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:18:10,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:18:10,062 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:18:10,062 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:18:10,320 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:18:10,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:18:10,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:18:10,342 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:18:10,343 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:18:10,344 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2019-11-24 05:18:10,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8252343f7/1fd95e717ec042a39d24e85fdf51f841/FLAGb4461623d [2019-11-24 05:18:10,937 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:18:10,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2019-11-24 05:18:10,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8252343f7/1fd95e717ec042a39d24e85fdf51f841/FLAGb4461623d [2019-11-24 05:18:11,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8252343f7/1fd95e717ec042a39d24e85fdf51f841 [2019-11-24 05:18:11,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:18:11,229 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:18:11,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:18:11,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:18:11,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:18:11,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:11,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4837be06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11, skipping insertion in model container [2019-11-24 05:18:11,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:11,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:18:11,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:18:11,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:18:11,841 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:18:11,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:18:11,977 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:18:11,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11 WrapperNode [2019-11-24 05:18:11,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:18:11,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:18:11,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:18:11,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:18:11,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:12,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:12,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:18:12,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:18:12,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:18:12,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:18:12,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:12,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:12,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:12,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:12,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:12,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:12,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:12,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:18:12,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:18:12,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:18:12,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:18:12,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:18:12,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:18:12,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:18:12,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:18:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:18:14,771 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:18:14,771 INFO L284 CfgBuilder]: Removed 192 assume(true) statements. [2019-11-24 05:18:14,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:18:14 BoogieIcfgContainer [2019-11-24 05:18:14,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:18:14,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:18:14,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:18:14,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:18:14,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:18:11" (1/3) ... [2019-11-24 05:18:14,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1e662d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:18:14, skipping insertion in model container [2019-11-24 05:18:14,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (2/3) ... [2019-11-24 05:18:14,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1e662d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:18:14, skipping insertion in model container [2019-11-24 05:18:14,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:18:14" (3/3) ... [2019-11-24 05:18:14,781 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product57.cil.c [2019-11-24 05:18:14,792 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:18:14,800 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:18:14,813 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:18:14,838 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:18:14,838 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:18:14,839 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:18:14,839 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:18:14,839 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:18:14,839 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:18:14,840 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:18:14,840 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:18:14,855 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-24 05:18:14,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:18:14,861 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:18:14,862 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:18:14,862 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:18:14,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:18:14,869 INFO L82 PathProgramCache]: Analyzing trace with hash -926943440, now seen corresponding path program 1 times [2019-11-24 05:18:14,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:18:14,879 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715867392] [2019-11-24 05:18:14,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:18:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:15,141 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 05:18:15,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715867392] [2019-11-24 05:18:15,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:18:15,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:18:15,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423597511] [2019-11-24 05:18:15,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:18:15,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:18:15,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:18:15,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:18:15,166 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-11-24 05:18:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:18:15,186 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2019-11-24 05:18:15,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:18:15,188 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 05:18:15,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:18:15,197 INFO L225 Difference]: With dead ends: 44 [2019-11-24 05:18:15,198 INFO L226 Difference]: Without dead ends: 21 [2019-11-24 05:18:15,201 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:18:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-24 05:18:15,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-24 05:18:15,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-24 05:18:15,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-24 05:18:15,235 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 7 [2019-11-24 05:18:15,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:18:15,235 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-24 05:18:15,235 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:18:15,236 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-24 05:18:15,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:18:15,236 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:18:15,236 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:18:15,237 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:18:15,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:18:15,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1468820807, now seen corresponding path program 1 times [2019-11-24 05:18:15,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:18:15,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566614640] [2019-11-24 05:18:15,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:18:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:15,580 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 05:18:15,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566614640] [2019-11-24 05:18:15,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:18:15,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:18:15,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37550278] [2019-11-24 05:18:15,582 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:18:15,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:18:15,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:18:15,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:18:15,584 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2019-11-24 05:18:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:18:15,754 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2019-11-24 05:18:15,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:18:15,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-24 05:18:15,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:18:15,756 INFO L225 Difference]: With dead ends: 45 [2019-11-24 05:18:15,756 INFO L226 Difference]: Without dead ends: 41 [2019-11-24 05:18:15,757 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:18:15,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-24 05:18:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2019-11-24 05:18:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:18:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-24 05:18:15,765 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 7 [2019-11-24 05:18:15,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:18:15,766 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-24 05:18:15,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:18:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-24 05:18:15,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 05:18:15,767 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:18:15,767 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:18:15,767 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:18:15,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:18:15,768 INFO L82 PathProgramCache]: Analyzing trace with hash -2130324227, now seen corresponding path program 1 times [2019-11-24 05:18:15,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:18:15,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073778328] [2019-11-24 05:18:15,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:18:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:16,089 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 05:18:16,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073778328] [2019-11-24 05:18:16,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893044039] [2019-11-24 05:18:16,090 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 05:18:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:16,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-24 05:18:16,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:18:16,494 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-11-24 05:18:16,739 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-11-24 05:18:16,774 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,782 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,809 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,872 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,876 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 05:18:16,876 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:18:16,891 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,894 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,894 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,904 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,909 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,925 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,926 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,930 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,930 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,937 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,943 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,975 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,976 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,980 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,993 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,994 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,006 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,010 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,012 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,018 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,020 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,026 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,040 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,041 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,054 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,072 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,073 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,075 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,077 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,078 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,087 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,100 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,101 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,279 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,287 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,292 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,304 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,308 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,314 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,329 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,345 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,349 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,352 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,427 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 05:18:17,428 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [704278690] [2019-11-24 05:18:17,452 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 05:18:17,453 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:18:17,459 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:18:17,465 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:18:17,466 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:18:27,257 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:18:28,891 WARN L192 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:18:29,053 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:18:30,169 WARN L192 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 684 DAG size of output: 672 [2019-11-24 05:18:32,670 WARN L192 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 792 DAG size of output: 789 [2019-11-24 05:18:35,785 WARN L192 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 792 DAG size of output: 791 [2019-11-24 05:18:36,609 WARN L192 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 792 DAG size of output: 791 [2019-11-24 05:18:37,281 WARN L192 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 791 DAG size of output: 788 [2019-11-24 05:18:38,069 WARN L192 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 792 DAG size of output: 791 [2019-11-24 05:18:38,813 WARN L192 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 792 DAG size of output: 791 [2019-11-24 05:18:39,429 WARN L192 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 791 DAG size of output: 788 [2019-11-24 05:18:39,434 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:18:44,590 WARN L192 SmtUtils]: Spent 4.92 s on a formula simplification. DAG size of input: 484 DAG size of output: 429 [2019-11-24 05:19:08,508 WARN L192 SmtUtils]: Spent 23.57 s on a formula simplification. DAG size of input: 788 DAG size of output: 497 [2019-11-24 05:19:23,545 WARN L192 SmtUtils]: Spent 14.66 s on a formula simplification. DAG size of input: 789 DAG size of output: 545 [2019-11-24 05:19:41,782 WARN L192 SmtUtils]: Spent 17.79 s on a formula simplification. DAG size of input: 800 DAG size of output: 548 [2019-11-24 05:19:41,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-24 05:19:41,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6, 6] total 16 [2019-11-24 05:19:41,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534575515] [2019-11-24 05:19:41,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:19:41,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:19:41,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:19:41,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2019-11-24 05:19:41,789 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states.