/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_spec3_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:27:20,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:27:20,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:27:20,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:27:20,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:27:20,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:27:20,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:27:20,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:27:20,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:27:20,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:27:20,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:27:20,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:27:20,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:27:20,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:27:20,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:27:20,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:27:20,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:27:20,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:27:20,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:27:20,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:27:20,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:27:20,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:27:20,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:27:20,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:27:20,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:27:20,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:27:20,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:27:20,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:27:20,105 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 05:27:20,126 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:27:20,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:27:20,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:27:20,130 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:27:20,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:27:20,131 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:27:20,131 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:27:20,131 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:27:20,131 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:27:20,132 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:27:20,132 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:27:20,132 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:27:20,132 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:27:20,132 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:27:20,132 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:27:20,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:27:20,133 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:27:20,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:27:20,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:27:20,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:27:20,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:27:20,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:27:20,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:27:20,139 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:27:20,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:27:20,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:27:20,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:27:20,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:27:20,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:27:20,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:27:20,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:27:20,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:27:20,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:27:20,141 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:27:20,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:27:20,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:27:20,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:27:20,142 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:27:20,387 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:27:20,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:27:20,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:27:20,409 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:27:20,410 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:27:20,410 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product50.cil.c [2019-11-24 05:27:20,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0f1c6fe/0d5fdcf153864bd6af1239cf6b1bdcce/FLAG6ff89f7d3 [2019-11-24 05:27:21,035 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:27:21,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product50.cil.c [2019-11-24 05:27:21,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0f1c6fe/0d5fdcf153864bd6af1239cf6b1bdcce/FLAG6ff89f7d3 [2019-11-24 05:27:21,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0f1c6fe/0d5fdcf153864bd6af1239cf6b1bdcce [2019-11-24 05:27:21,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:27:21,315 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:27:21,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:27:21,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:27:21,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:27:21,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:27:21" (1/1) ... [2019-11-24 05:27:21,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@533c518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:21, skipping insertion in model container [2019-11-24 05:27:21,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:27:21" (1/1) ... [2019-11-24 05:27:21,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:27:21,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:27:21,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:27:21,837 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:27:21,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:27:21,961 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:27:21,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:21 WrapperNode [2019-11-24 05:27:21,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:27:21,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:27:21,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:27:21,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:27:21,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:21" (1/1) ... [2019-11-24 05:27:21,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:21" (1/1) ... [2019-11-24 05:27:22,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:27:22,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:27:22,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:27:22,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:27:22,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:21" (1/1) ... [2019-11-24 05:27:22,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:21" (1/1) ... [2019-11-24 05:27:22,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:21" (1/1) ... [2019-11-24 05:27:22,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:21" (1/1) ... [2019-11-24 05:27:22,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:21" (1/1) ... [2019-11-24 05:27:22,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:21" (1/1) ... [2019-11-24 05:27:22,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:21" (1/1) ... [2019-11-24 05:27:22,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:27:22,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:27:22,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:27:22,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:27:22,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:21" (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 05:27:22,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:27:22,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:27:22,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:27:22,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:27:24,392 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:27:24,392 INFO L284 CfgBuilder]: Removed 164 assume(true) statements. [2019-11-24 05:27:24,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:27:24 BoogieIcfgContainer [2019-11-24 05:27:24,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:27:24,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:27:24,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:27:24,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:27:24,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:27:21" (1/3) ... [2019-11-24 05:27:24,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eeaedd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:27:24, skipping insertion in model container [2019-11-24 05:27:24,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:21" (2/3) ... [2019-11-24 05:27:24,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eeaedd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:27:24, skipping insertion in model container [2019-11-24 05:27:24,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:27:24" (3/3) ... [2019-11-24 05:27:24,404 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product50.cil.c [2019-11-24 05:27:24,414 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:27:24,422 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:27:24,433 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:27:24,461 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:27:24,462 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:27:24,462 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:27:24,462 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:27:24,462 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:27:24,463 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:27:24,463 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:27:24,463 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:27:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:27:24,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:27:24,488 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:27:24,489 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:27:24,489 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:27:24,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:27:24,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1811705797, now seen corresponding path program 1 times [2019-11-24 05:27:24,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:27:24,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059740620] [2019-11-24 05:27:24,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:27:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:27:24,905 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 05:27:24,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059740620] [2019-11-24 05:27:24,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:27:24,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-24 05:27:24,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577894196] [2019-11-24 05:27:24,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-24 05:27:24,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:27:24,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-24 05:27:24,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:27:24,929 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states. [2019-11-24 05:27:25,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:27:25,259 INFO L93 Difference]: Finished difference Result 90 states and 135 transitions. [2019-11-24 05:27:25,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:27:25,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-11-24 05:27:25,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:27:25,271 INFO L225 Difference]: With dead ends: 90 [2019-11-24 05:27:25,272 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:27:25,275 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-11-24 05:27:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:27:25,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 29. [2019-11-24 05:27:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-24 05:27:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2019-11-24 05:27:25,314 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 8 [2019-11-24 05:27:25,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:27:25,315 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-11-24 05:27:25,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-24 05:27:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2019-11-24 05:27:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:27:25,316 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:27:25,316 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:27:25,316 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:27:25,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:27:25,317 INFO L82 PathProgramCache]: Analyzing trace with hash -705827289, now seen corresponding path program 1 times [2019-11-24 05:27:25,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:27:25,317 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145814715] [2019-11-24 05:27:25,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:27:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:27:25,715 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 05:27:25,716 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145814715] [2019-11-24 05:27:25,716 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482339093] [2019-11-24 05:27:25,716 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 05:27:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:27:25,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 38 conjunts are in the unsatisfiable core [2019-11-24 05:27:25,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:27:25,984 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:25,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,164 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2019-11-24 05:27:26,186 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,199 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,200 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,203 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,210 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,216 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,218 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,222 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,224 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,225 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,227 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,228 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,229 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,230 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,232 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,234 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,237 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,238 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,255 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,263 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,280 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,291 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,294 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,296 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,297 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,304 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,306 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,307 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,308 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,309 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,437 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 15 [2019-11-24 05:27:26,477 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 05:27:26,477 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:27:26,520 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,521 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,523 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,654 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,656 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,659 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,660 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,662 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,662 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,670 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,671 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,675 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,676 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,677 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,685 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,689 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,693 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,695 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,695 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,705 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,708 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,720 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,738 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,746 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,755 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,756 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,757 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,758 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,759 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,760 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,761 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,764 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,767 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,772 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,773 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,775 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,783 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,806 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,806 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,811 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,812 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,813 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,816 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,819 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,819 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:26,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:27,050 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 30 [2019-11-24 05:27:27,112 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 05:27:27,113 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1957032799] [2019-11-24 05:27:27,158 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:27:27,160 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:27:27,165 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:27:27,172 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:27:27,172 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:27:37,077 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:27:38,742 WARN L192 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:27:38,898 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:27:39,444 WARN L192 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 578 DAG size of output: 578 [2019-11-24 05:27:40,537 WARN L192 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 678 [2019-11-24 05:27:42,325 WARN L192 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 748 DAG size of output: 745 [2019-11-24 05:27:45,004 WARN L192 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 749 DAG size of output: 747 [2019-11-24 05:27:58,869 WARN L192 SmtUtils]: Spent 9.27 s on a formula simplification. DAG size of input: 1158 DAG size of output: 1057 [2019-11-24 05:28:06,405 WARN L192 SmtUtils]: Spent 7.52 s on a formula simplification. DAG size of input: 1158 DAG size of output: 1057 [2019-11-24 05:28:13,127 WARN L192 SmtUtils]: Spent 6.71 s on a formula simplification. DAG size of input: 1032 DAG size of output: 1031 [2019-11-24 05:28:13,137 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:28:18,326 WARN L192 SmtUtils]: Spent 4.98 s on a formula simplification. DAG size of input: 484 DAG size of output: 429