/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/ssh-simplified/s3_srvr_3.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 06:03:29,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 06:03:29,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 06:03:29,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 06:03:29,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 06:03:29,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 06:03:29,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 06:03:29,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 06:03:29,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 06:03:29,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 06:03:29,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 06:03:29,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 06:03:29,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 06:03:29,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 06:03:29,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 06:03:29,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 06:03:29,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 06:03:29,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 06:03:29,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 06:03:29,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 06:03:29,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 06:03:29,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 06:03:29,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 06:03:29,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 06:03:29,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 06:03:29,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 06:03:29,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 06:03:29,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 06:03:29,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 06:03:29,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 06:03:29,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 06:03:29,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 06:03:29,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 06:03:29,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 06:03:29,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 06:03:29,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 06:03:29,115 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 06:03:29,140 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 06:03:29,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 06:03:29,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 06:03:29,142 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 06:03:29,145 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 06:03:29,145 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 06:03:29,145 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 06:03:29,145 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 06:03:29,145 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 06:03:29,146 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 06:03:29,147 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 06:03:29,147 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 06:03:29,147 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 06:03:29,148 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 06:03:29,148 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 06:03:29,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 06:03:29,149 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 06:03:29,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 06:03:29,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 06:03:29,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 06:03:29,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 06:03:29,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 06:03:29,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 06:03:29,154 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 06:03:29,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 06:03:29,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 06:03:29,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 06:03:29,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 06:03:29,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 06:03:29,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 06:03:29,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 06:03:29,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 06:03:29,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 06:03:29,158 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 06:03:29,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 06:03:29,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 06:03:29,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 06:03:29,159 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 06:03:29,429 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 06:03:29,446 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 06:03:29,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 06:03:29,451 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 06:03:29,451 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 06:03:29,452 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_3.cil.c [2019-11-24 06:03:29,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b864c7f9/d09b1992d9794216b6002817303e3af5/FLAGa9494ea92 [2019-11-24 06:03:30,004 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 06:03:30,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_3.cil.c [2019-11-24 06:03:30,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b864c7f9/d09b1992d9794216b6002817303e3af5/FLAGa9494ea92 [2019-11-24 06:03:30,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b864c7f9/d09b1992d9794216b6002817303e3af5 [2019-11-24 06:03:30,359 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 06:03:30,362 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 06:03:30,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 06:03:30,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 06:03:30,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 06:03:30,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:03:30" (1/1) ... [2019-11-24 06:03:30,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef28fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:30, skipping insertion in model container [2019-11-24 06:03:30,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:03:30" (1/1) ... [2019-11-24 06:03:30,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 06:03:30,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 06:03:30,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 06:03:30,686 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 06:03:30,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 06:03:30,882 INFO L208 MainTranslator]: Completed translation [2019-11-24 06:03:30,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:30 WrapperNode [2019-11-24 06:03:30,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 06:03:30,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 06:03:30,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 06:03:30,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 06:03:30,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:30" (1/1) ... [2019-11-24 06:03:30,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:30" (1/1) ... [2019-11-24 06:03:30,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 06:03:30,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 06:03:30,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 06:03:30,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 06:03:30,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:30" (1/1) ... [2019-11-24 06:03:30,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:30" (1/1) ... [2019-11-24 06:03:30,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:30" (1/1) ... [2019-11-24 06:03:30,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:30" (1/1) ... [2019-11-24 06:03:31,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:30" (1/1) ... [2019-11-24 06:03:31,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:30" (1/1) ... [2019-11-24 06:03:31,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:30" (1/1) ... [2019-11-24 06:03:31,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 06:03:31,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 06:03:31,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 06:03:31,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 06:03:31,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:30" (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 06:03:31,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 06:03:31,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 06:03:31,216 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 06:03:31,824 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2019-11-24 06:03:31,825 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2019-11-24 06:03:32,120 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 06:03:32,120 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-24 06:03:32,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:03:32 BoogieIcfgContainer [2019-11-24 06:03:32,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 06:03:32,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 06:03:32,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 06:03:32,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 06:03:32,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 06:03:30" (1/3) ... [2019-11-24 06:03:32,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8f8c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 06:03:32, skipping insertion in model container [2019-11-24 06:03:32,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:30" (2/3) ... [2019-11-24 06:03:32,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8f8c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 06:03:32, skipping insertion in model container [2019-11-24 06:03:32,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:03:32" (3/3) ... [2019-11-24 06:03:32,131 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_3.cil.c [2019-11-24 06:03:32,143 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 06:03:32,154 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 06:03:32,167 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 06:03:32,207 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 06:03:32,207 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 06:03:32,207 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 06:03:32,208 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 06:03:32,208 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 06:03:32,208 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 06:03:32,208 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 06:03:32,208 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 06:03:32,232 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2019-11-24 06:03:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-24 06:03:32,243 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:32,244 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:32,245 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:32,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:32,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1936523176, now seen corresponding path program 1 times [2019-11-24 06:03:32,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:32,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623482547] [2019-11-24 06:03:32,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:32,450 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 06:03:32,451 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623482547] [2019-11-24 06:03:32,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:32,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 06:03:32,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668204863] [2019-11-24 06:03:32,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:32,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:32,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:32,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:32,475 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 3 states. [2019-11-24 06:03:32,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:32,746 INFO L93 Difference]: Finished difference Result 231 states and 400 transitions. [2019-11-24 06:03:32,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:32,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-11-24 06:03:32,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:32,767 INFO L225 Difference]: With dead ends: 231 [2019-11-24 06:03:32,767 INFO L226 Difference]: Without dead ends: 121 [2019-11-24 06:03:32,773 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:32,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-11-24 06:03:32,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2019-11-24 06:03:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-24 06:03:32,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 174 transitions. [2019-11-24 06:03:32,847 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 174 transitions. Word has length 39 [2019-11-24 06:03:32,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:32,848 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 174 transitions. [2019-11-24 06:03:32,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:32,849 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 174 transitions. [2019-11-24 06:03:32,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-24 06:03:32,853 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:32,853 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:32,854 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:32,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:32,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1858234032, now seen corresponding path program 1 times [2019-11-24 06:03:32,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:32,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066560524] [2019-11-24 06:03:32,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:03:32,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066560524] [2019-11-24 06:03:32,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:32,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:32,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559974140] [2019-11-24 06:03:32,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:32,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:32,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:32,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:32,988 INFO L87 Difference]: Start difference. First operand 119 states and 174 transitions. Second operand 3 states. [2019-11-24 06:03:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:33,165 INFO L93 Difference]: Finished difference Result 257 states and 382 transitions. [2019-11-24 06:03:33,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:33,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-11-24 06:03:33,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:33,167 INFO L225 Difference]: With dead ends: 257 [2019-11-24 06:03:33,167 INFO L226 Difference]: Without dead ends: 140 [2019-11-24 06:03:33,169 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 06:03:33,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-11-24 06:03:33,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2019-11-24 06:03:33,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-11-24 06:03:33,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 196 transitions. [2019-11-24 06:03:33,181 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 196 transitions. Word has length 53 [2019-11-24 06:03:33,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:33,182 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 196 transitions. [2019-11-24 06:03:33,182 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:33,182 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 196 transitions. [2019-11-24 06:03:33,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-24 06:03:33,184 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:33,185 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:33,185 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:33,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:33,185 INFO L82 PathProgramCache]: Analyzing trace with hash 113275557, now seen corresponding path program 1 times [2019-11-24 06:03:33,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:33,186 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714647302] [2019-11-24 06:03:33,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-24 06:03:33,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714647302] [2019-11-24 06:03:33,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:33,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 06:03:33,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508642695] [2019-11-24 06:03:33,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 06:03:33,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:33,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 06:03:33,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 06:03:33,316 INFO L87 Difference]: Start difference. First operand 138 states and 196 transitions. Second operand 4 states. [2019-11-24 06:03:33,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:33,571 INFO L93 Difference]: Finished difference Result 319 states and 470 transitions. [2019-11-24 06:03:33,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 06:03:33,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2019-11-24 06:03:33,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:33,574 INFO L225 Difference]: With dead ends: 319 [2019-11-24 06:03:33,575 INFO L226 Difference]: Without dead ends: 183 [2019-11-24 06:03:33,578 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 06:03:33,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-11-24 06:03:33,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 176. [2019-11-24 06:03:33,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2019-11-24 06:03:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2019-11-24 06:03:33,606 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 70 [2019-11-24 06:03:33,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:33,606 INFO L462 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2019-11-24 06:03:33,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 06:03:33,606 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2019-11-24 06:03:33,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-24 06:03:33,610 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:33,611 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:33,611 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:33,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:33,611 INFO L82 PathProgramCache]: Analyzing trace with hash -306427960, now seen corresponding path program 1 times [2019-11-24 06:03:33,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:33,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430584731] [2019-11-24 06:03:33,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-24 06:03:33,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430584731] [2019-11-24 06:03:33,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:33,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:33,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698086854] [2019-11-24 06:03:33,714 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:33,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:33,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:33,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:33,715 INFO L87 Difference]: Start difference. First operand 176 states and 238 transitions. Second operand 3 states. [2019-11-24 06:03:33,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:33,872 INFO L93 Difference]: Finished difference Result 383 states and 532 transitions. [2019-11-24 06:03:33,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:33,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2019-11-24 06:03:33,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:33,874 INFO L225 Difference]: With dead ends: 383 [2019-11-24 06:03:33,874 INFO L226 Difference]: Without dead ends: 209 [2019-11-24 06:03:33,879 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 06:03:33,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2019-11-24 06:03:33,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2019-11-24 06:03:33,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2019-11-24 06:03:33,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 264 transitions. [2019-11-24 06:03:33,906 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 264 transitions. Word has length 90 [2019-11-24 06:03:33,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:33,906 INFO L462 AbstractCegarLoop]: Abstraction has 199 states and 264 transitions. [2019-11-24 06:03:33,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:33,907 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 264 transitions. [2019-11-24 06:03:33,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-24 06:03:33,912 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:33,912 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:33,912 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:33,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:33,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1039461217, now seen corresponding path program 1 times [2019-11-24 06:03:33,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:33,913 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302737111] [2019-11-24 06:03:33,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:03:34,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302737111] [2019-11-24 06:03:34,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969034544] [2019-11-24 06:03:34,070 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 06:03:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:34,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-24 06:03:34,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:03:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:03:34,231 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:03:34,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:34,265 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:34,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-11-24 06:03:34,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-24 06:03:34,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 6 [2019-11-24 06:03:34,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822991826] [2019-11-24 06:03:34,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:34,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:34,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:34,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-24 06:03:34,309 INFO L87 Difference]: Start difference. First operand 199 states and 264 transitions. Second operand 3 states. [2019-11-24 06:03:34,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:34,337 INFO L93 Difference]: Finished difference Result 395 states and 525 transitions. [2019-11-24 06:03:34,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:34,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2019-11-24 06:03:34,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:34,341 INFO L225 Difference]: With dead ends: 395 [2019-11-24 06:03:34,341 INFO L226 Difference]: Without dead ends: 393 [2019-11-24 06:03:34,342 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 209 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-24 06:03:34,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2019-11-24 06:03:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 392. [2019-11-24 06:03:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2019-11-24 06:03:34,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 522 transitions. [2019-11-24 06:03:34,361 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 522 transitions. Word has length 108 [2019-11-24 06:03:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:34,361 INFO L462 AbstractCegarLoop]: Abstraction has 392 states and 522 transitions. [2019-11-24 06:03:34,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:34,362 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 522 transitions. [2019-11-24 06:03:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-24 06:03:34,364 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:34,364 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:34,569 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 06:03:34,569 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:34,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:34,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1348151444, now seen corresponding path program 1 times [2019-11-24 06:03:34,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:34,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49904254] [2019-11-24 06:03:34,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-24 06:03:34,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49904254] [2019-11-24 06:03:34,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:34,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:34,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830342833] [2019-11-24 06:03:34,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:34,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:34,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:34,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:34,679 INFO L87 Difference]: Start difference. First operand 392 states and 522 transitions. Second operand 3 states. [2019-11-24 06:03:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:34,869 INFO L93 Difference]: Finished difference Result 880 states and 1216 transitions. [2019-11-24 06:03:34,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:34,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2019-11-24 06:03:34,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:34,873 INFO L225 Difference]: With dead ends: 880 [2019-11-24 06:03:34,874 INFO L226 Difference]: Without dead ends: 490 [2019-11-24 06:03:34,875 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 06:03:34,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2019-11-24 06:03:34,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 470. [2019-11-24 06:03:34,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2019-11-24 06:03:34,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 612 transitions. [2019-11-24 06:03:34,892 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 612 transitions. Word has length 142 [2019-11-24 06:03:34,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:34,894 INFO L462 AbstractCegarLoop]: Abstraction has 470 states and 612 transitions. [2019-11-24 06:03:34,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:34,894 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 612 transitions. [2019-11-24 06:03:34,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-11-24 06:03:34,898 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:34,899 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:34,899 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:34,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:34,899 INFO L82 PathProgramCache]: Analyzing trace with hash -6055516, now seen corresponding path program 1 times [2019-11-24 06:03:34,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:34,900 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961970562] [2019-11-24 06:03:34,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-11-24 06:03:35,015 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961970562] [2019-11-24 06:03:35,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:35,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:35,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626654005] [2019-11-24 06:03:35,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:35,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:35,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:35,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:35,018 INFO L87 Difference]: Start difference. First operand 470 states and 612 transitions. Second operand 3 states. [2019-11-24 06:03:35,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:35,170 INFO L93 Difference]: Finished difference Result 1004 states and 1340 transitions. [2019-11-24 06:03:35,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:35,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2019-11-24 06:03:35,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:35,173 INFO L225 Difference]: With dead ends: 1004 [2019-11-24 06:03:35,174 INFO L226 Difference]: Without dead ends: 536 [2019-11-24 06:03:35,175 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 06:03:35,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2019-11-24 06:03:35,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 520. [2019-11-24 06:03:35,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2019-11-24 06:03:35,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 668 transitions. [2019-11-24 06:03:35,190 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 668 transitions. Word has length 148 [2019-11-24 06:03:35,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:35,191 INFO L462 AbstractCegarLoop]: Abstraction has 520 states and 668 transitions. [2019-11-24 06:03:35,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:35,191 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 668 transitions. [2019-11-24 06:03:35,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-11-24 06:03:35,193 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:35,194 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:35,194 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:35,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:35,194 INFO L82 PathProgramCache]: Analyzing trace with hash -733319422, now seen corresponding path program 1 times [2019-11-24 06:03:35,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:35,195 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990645453] [2019-11-24 06:03:35,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-11-24 06:03:35,263 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990645453] [2019-11-24 06:03:35,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:35,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:35,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803072811] [2019-11-24 06:03:35,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:35,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:35,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:35,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:35,265 INFO L87 Difference]: Start difference. First operand 520 states and 668 transitions. Second operand 3 states. [2019-11-24 06:03:35,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:35,445 INFO L93 Difference]: Finished difference Result 1144 states and 1516 transitions. [2019-11-24 06:03:35,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:35,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2019-11-24 06:03:35,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:35,450 INFO L225 Difference]: With dead ends: 1144 [2019-11-24 06:03:35,450 INFO L226 Difference]: Without dead ends: 624 [2019-11-24 06:03:35,451 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 06:03:35,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2019-11-24 06:03:35,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 614. [2019-11-24 06:03:35,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-11-24 06:03:35,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 822 transitions. [2019-11-24 06:03:35,474 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 822 transitions. Word has length 151 [2019-11-24 06:03:35,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:35,475 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 822 transitions. [2019-11-24 06:03:35,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:35,475 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 822 transitions. [2019-11-24 06:03:35,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-11-24 06:03:35,478 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:35,479 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:35,479 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:35,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:35,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1400007089, now seen corresponding path program 1 times [2019-11-24 06:03:35,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:35,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193732309] [2019-11-24 06:03:35,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:35,563 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-24 06:03:35,564 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193732309] [2019-11-24 06:03:35,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:35,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:35,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144341376] [2019-11-24 06:03:35,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:35,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:35,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:35,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:35,567 INFO L87 Difference]: Start difference. First operand 614 states and 822 transitions. Second operand 3 states. [2019-11-24 06:03:35,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:35,743 INFO L93 Difference]: Finished difference Result 1284 states and 1740 transitions. [2019-11-24 06:03:35,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:35,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2019-11-24 06:03:35,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:35,748 INFO L225 Difference]: With dead ends: 1284 [2019-11-24 06:03:35,748 INFO L226 Difference]: Without dead ends: 672 [2019-11-24 06:03:35,749 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 06:03:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2019-11-24 06:03:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 668. [2019-11-24 06:03:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2019-11-24 06:03:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 882 transitions. [2019-11-24 06:03:35,771 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 882 transitions. Word has length 170 [2019-11-24 06:03:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:35,771 INFO L462 AbstractCegarLoop]: Abstraction has 668 states and 882 transitions. [2019-11-24 06:03:35,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:35,771 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 882 transitions. [2019-11-24 06:03:35,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-11-24 06:03:35,774 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:35,775 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:35,775 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:35,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:35,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1579801951, now seen corresponding path program 1 times [2019-11-24 06:03:35,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:35,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419451646] [2019-11-24 06:03:35,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-11-24 06:03:35,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419451646] [2019-11-24 06:03:35,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:35,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:35,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323594289] [2019-11-24 06:03:35,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:35,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:35,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:35,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:35,855 INFO L87 Difference]: Start difference. First operand 668 states and 882 transitions. Second operand 3 states. [2019-11-24 06:03:36,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:36,048 INFO L93 Difference]: Finished difference Result 1392 states and 1864 transitions. [2019-11-24 06:03:36,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:36,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-11-24 06:03:36,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:36,054 INFO L225 Difference]: With dead ends: 1392 [2019-11-24 06:03:36,054 INFO L226 Difference]: Without dead ends: 726 [2019-11-24 06:03:36,056 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 06:03:36,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2019-11-24 06:03:36,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 726. [2019-11-24 06:03:36,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726 states. [2019-11-24 06:03:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 946 transitions. [2019-11-24 06:03:36,084 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 946 transitions. Word has length 175 [2019-11-24 06:03:36,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:36,086 INFO L462 AbstractCegarLoop]: Abstraction has 726 states and 946 transitions. [2019-11-24 06:03:36,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:36,086 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 946 transitions. [2019-11-24 06:03:36,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-11-24 06:03:36,091 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:36,092 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:36,092 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:36,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:36,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1741846546, now seen corresponding path program 1 times [2019-11-24 06:03:36,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:36,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154972004] [2019-11-24 06:03:36,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 303 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-11-24 06:03:36,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154972004] [2019-11-24 06:03:36,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870170815] [2019-11-24 06:03:36,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 06:03:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:36,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 06:03:36,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:03:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2019-11-24 06:03:36,460 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:03:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2019-11-24 06:03:36,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 06:03:36,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [4] total 7 [2019-11-24 06:03:36,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555635604] [2019-11-24 06:03:36,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 06:03:36,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:36,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 06:03:36,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-24 06:03:36,514 INFO L87 Difference]: Start difference. First operand 726 states and 946 transitions. Second operand 5 states. [2019-11-24 06:03:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:36,993 INFO L93 Difference]: Finished difference Result 1578 states and 2113 transitions. [2019-11-24 06:03:36,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 06:03:36,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2019-11-24 06:03:36,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:36,998 INFO L225 Difference]: With dead ends: 1578 [2019-11-24 06:03:36,998 INFO L226 Difference]: Without dead ends: 772 [2019-11-24 06:03:37,001 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 400 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-24 06:03:37,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2019-11-24 06:03:37,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 747. [2019-11-24 06:03:37,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-11-24 06:03:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 964 transitions. [2019-11-24 06:03:37,037 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 964 transitions. Word has length 202 [2019-11-24 06:03:37,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:37,038 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 964 transitions. [2019-11-24 06:03:37,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 06:03:37,038 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 964 transitions. [2019-11-24 06:03:37,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-11-24 06:03:37,045 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:37,045 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:37,251 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 06:03:37,251 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:37,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:37,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1608163404, now seen corresponding path program 1 times [2019-11-24 06:03:37,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:37,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621390465] [2019-11-24 06:03:37,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2019-11-24 06:03:37,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621390465] [2019-11-24 06:03:37,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152328324] [2019-11-24 06:03:37,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 06:03:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:37,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 06:03:37,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:03:37,639 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2019-11-24 06:03:37,640 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:03:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2019-11-24 06:03:37,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [247566707] [2019-11-24 06:03:37,857 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2019-11-24 06:03:37,857 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 06:03:37,868 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 06:03:37,879 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 06:03:37,880 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 06:03:38,871 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-24 06:03:39,095 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 216 [2019-11-24 06:03:39,331 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2019-11-24 06:03:39,515 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2019-11-24 06:03:39,668 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2019-11-24 06:03:39,872 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 236 [2019-11-24 06:03:40,195 WARN L192 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 237 [2019-11-24 06:03:40,343 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 235 [2019-11-24 06:03:40,673 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 249 [2019-11-24 06:03:40,848 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 249 [2019-11-24 06:03:41,016 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 248 [2019-11-24 06:03:41,221 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2019-11-24 06:03:41,414 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2019-11-24 06:03:41,551 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2019-11-24 06:03:41,779 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 277 [2019-11-24 06:03:42,072 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 280 [2019-11-24 06:03:42,357 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 251 [2019-11-24 06:03:42,621 WARN L192 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 251 [2019-11-24 06:03:42,843 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2019-11-24 06:03:43,263 WARN L192 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 266 [2019-11-24 06:03:43,628 WARN L192 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 266 [2019-11-24 06:03:43,907 WARN L192 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2019-11-24 06:03:44,221 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2019-11-24 06:03:44,473 WARN L192 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2019-11-24 06:03:44,692 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2019-11-24 06:03:45,089 WARN L192 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 302 [2019-11-24 06:03:45,676 WARN L192 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 302 [2019-11-24 06:03:45,948 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 262 [2019-11-24 06:03:46,147 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 262 [2019-11-24 06:03:46,327 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 261 [2019-11-24 06:03:46,553 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 278 [2019-11-24 06:03:46,814 WARN L192 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 278 [2019-11-24 06:03:46,985 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2019-11-24 06:03:47,250 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2019-11-24 06:03:47,448 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2019-11-24 06:03:47,631 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2019-11-24 06:03:48,137 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 241 [2019-11-24 06:03:48,290 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 241 [2019-11-24 06:03:48,405 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2019-11-24 06:03:48,666 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 309 [2019-11-24 06:03:48,808 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 309 [2019-11-24 06:03:48,948 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2019-11-24 06:03:49,204 WARN L192 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-24 06:03:49,376 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-24 06:03:49,548 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-24 06:03:49,742 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-24 06:03:49,920 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-24 06:03:50,131 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-24 06:03:50,385 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 301 [2019-11-24 06:03:50,577 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 301 [2019-11-24 06:03:50,749 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2019-11-24 06:03:51,010 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 396 DAG size of output: 348 [2019-11-24 06:03:51,344 WARN L192 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 349 [2019-11-24 06:03:54,134 WARN L192 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 333 [2019-11-24 06:03:54,374 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 333 [2019-11-24 06:03:54,625 WARN L192 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 330 [2019-11-24 06:03:54,864 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 333 [2019-11-24 06:03:55,105 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 333 [2019-11-24 06:03:55,339 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 330 [2019-11-24 06:03:55,566 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 344 [2019-11-24 06:03:55,794 WARN L192 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 344 [2019-11-24 06:03:55,930 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2019-11-24 06:03:56,135 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 344 [2019-11-24 06:03:56,357 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 344 [2019-11-24 06:03:56,500 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2019-11-24 06:03:56,704 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 344 [2019-11-24 06:03:56,910 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 344 [2019-11-24 06:03:57,046 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2019-11-24 06:03:58,073 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 260 [2019-11-24 06:03:58,185 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 260 [2019-11-24 06:03:58,408 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 293 [2019-11-24 06:03:58,535 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 293 [2019-11-24 06:03:58,663 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2019-11-24 06:03:58,879 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2019-11-24 06:03:59,021 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2019-11-24 06:03:59,162 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2019-11-24 06:03:59,345 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2019-11-24 06:03:59,525 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2019-11-24 06:03:59,705 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2019-11-24 06:03:59,891 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 316 [2019-11-24 06:04:00,071 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 316 [2019-11-24 06:04:00,247 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 315 [2019-11-24 06:04:00,427 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 316 [2019-11-24 06:04:00,625 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 316 [2019-11-24 06:04:00,802 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 315 [2019-11-24 06:04:01,027 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-11-24 06:04:01,234 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-11-24 06:04:01,445 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-11-24 06:04:01,728 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2019-11-24 06:04:01,972 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2019-11-24 06:04:02,215 WARN L192 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2019-11-24 06:04:02,459 WARN L192 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2019-11-24 06:04:02,702 WARN L192 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2019-11-24 06:04:02,980 WARN L192 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2019-11-24 06:04:03,307 WARN L192 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2019-11-24 06:04:03,597 WARN L192 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2019-11-24 06:04:03,887 WARN L192 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2019-11-24 06:04:03,888 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 06:04:04,556 WARN L192 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 147 [2019-11-24 06:04:09,784 WARN L192 SmtUtils]: Spent 5.13 s on a formula simplification. DAG size of input: 306 DAG size of output: 248 [2019-11-24 06:04:14,720 WARN L192 SmtUtils]: Spent 4.81 s on a formula simplification. DAG size of input: 305 DAG size of output: 238 [2019-11-24 06:04:16,915 WARN L192 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 332 DAG size of output: 155 [2019-11-24 06:04:18,192 WARN L192 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 339 DAG size of output: 157 [2019-11-24 06:04:22,783 WARN L192 SmtUtils]: Spent 4.46 s on a formula simplification. DAG size of input: 303 DAG size of output: 234 [2019-11-24 06:04:27,122 WARN L192 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 305 DAG size of output: 233 [2019-11-24 06:04:33,198 WARN L192 SmtUtils]: Spent 4.93 s on a formula simplification. DAG size of input: 333 DAG size of output: 229 [2019-11-24 06:04:34,916 WARN L192 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 339 DAG size of output: 162 [2019-11-24 06:04:36,140 WARN L192 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 312 DAG size of output: 164 [2019-11-24 06:04:42,015 WARN L192 SmtUtils]: Spent 4.34 s on a formula simplification. DAG size of input: 340 DAG size of output: 225 [2019-11-24 06:04:43,613 WARN L192 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 343 DAG size of output: 162 [2019-11-24 06:04:45,114 WARN L192 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 343 DAG size of output: 164 [2019-11-24 06:04:46,608 WARN L192 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 345 DAG size of output: 171 [2019-11-24 06:04:54,019 WARN L192 SmtUtils]: Spent 5.50 s on a formula simplification. DAG size of input: 344 DAG size of output: 221 [2019-11-24 06:04:55,718 WARN L192 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 347 DAG size of output: 171 [2019-11-24 06:04:57,452 WARN L192 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 353 DAG size of output: 186 [2019-11-24 06:04:59,150 WARN L192 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 354 DAG size of output: 183