/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/array-crafted/zero_sum1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:56:33,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:56:33,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:56:33,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:56:33,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:56:33,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:56:33,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:56:33,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:56:33,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:56:33,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:56:33,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:56:33,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:56:33,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:56:33,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:56:33,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:56:33,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:56:33,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:56:33,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:56:33,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:56:33,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:56:33,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:56:33,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:56:33,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:56:33,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:56:33,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:56:33,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:56:33,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:56:33,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:56:33,632 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 [2019-11-23 22:56:33,647 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:56:33,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:56:33,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 22:56:33,648 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 22:56:33,648 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 22:56:33,648 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 22:56:33,649 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 22:56:33,649 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 22:56:33,649 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 22:56:33,649 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 22:56:33,649 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 22:56:33,650 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 22:56:33,650 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 22:56:33,650 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 22:56:33,650 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 22:56:33,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:56:33,651 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:56:33,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:56:33,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:56:33,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:56:33,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:56:33,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:56:33,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:56:33,653 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:56:33,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:56:33,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:56:33,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:56:33,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:56:33,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:56:33,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:56:33,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:56:33,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:56:33,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:56:33,655 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 22:56:33,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:56:33,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:56:33,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:56:33,655 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 22:56:33,984 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:56:34,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:56:34,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:56:34,006 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:56:34,006 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:56:34,007 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum1.c [2019-11-23 22:56:34,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97badf91b/f8fd10a931cd499899012f65e5fd6e22/FLAG47ec39f8c [2019-11-23 22:56:34,530 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:56:34,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum1.c [2019-11-23 22:56:34,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97badf91b/f8fd10a931cd499899012f65e5fd6e22/FLAG47ec39f8c [2019-11-23 22:56:34,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97badf91b/f8fd10a931cd499899012f65e5fd6e22 [2019-11-23 22:56:34,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:56:34,928 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:56:34,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:56:34,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:56:34,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:56:34,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:56:34" (1/1) ... [2019-11-23 22:56:34,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c891e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:34, skipping insertion in model container [2019-11-23 22:56:34,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:56:34" (1/1) ... [2019-11-23 22:56:34,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:56:34,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:56:35,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:56:35,145 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:56:35,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:56:35,184 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:56:35,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:35 WrapperNode [2019-11-23 22:56:35,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:56:35,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:56:35,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:56:35,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:56:35,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:35" (1/1) ... [2019-11-23 22:56:35,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:35" (1/1) ... [2019-11-23 22:56:35,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:56:35,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:56:35,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:56:35,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:56:35,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:35" (1/1) ... [2019-11-23 22:56:35,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:35" (1/1) ... [2019-11-23 22:56:35,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:35" (1/1) ... [2019-11-23 22:56:35,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:35" (1/1) ... [2019-11-23 22:56:35,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:35" (1/1) ... [2019-11-23 22:56:35,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:35" (1/1) ... [2019-11-23 22:56:35,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:35" (1/1) ... [2019-11-23 22:56:35,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:56:35,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:56:35,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:56:35,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:56:35,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:35" (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 [2019-11-23 22:56:35,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 22:56:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:56:35,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:56:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 22:56:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 22:56:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 22:56:35,764 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:56:35,765 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-23 22:56:35,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:56:35 BoogieIcfgContainer [2019-11-23 22:56:35,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:56:35,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:56:35,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:56:35,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:56:35,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:56:34" (1/3) ... [2019-11-23 22:56:35,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe95168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:56:35, skipping insertion in model container [2019-11-23 22:56:35,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:35" (2/3) ... [2019-11-23 22:56:35,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe95168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:56:35, skipping insertion in model container [2019-11-23 22:56:35,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:56:35" (3/3) ... [2019-11-23 22:56:35,774 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum1.c [2019-11-23 22:56:35,783 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:56:35,791 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:56:35,799 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:56:35,819 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:56:35,819 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:56:35,819 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:56:35,819 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:56:35,819 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:56:35,819 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:56:35,819 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:56:35,820 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:56:35,831 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-23 22:56:35,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 22:56:35,837 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:56:35,839 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:56:35,839 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:56:35,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:56:35,844 INFO L82 PathProgramCache]: Analyzing trace with hash -483383865, now seen corresponding path program 1 times [2019-11-23 22:56:35,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:56:35,852 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180097530] [2019-11-23 22:56:35,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:56:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:56:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:56:36,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180097530] [2019-11-23 22:56:36,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:56:36,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:56:36,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974282420] [2019-11-23 22:56:36,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:56:36,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:56:36,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:56:36,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:56:36,065 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2019-11-23 22:56:36,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:56:36,160 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2019-11-23 22:56:36,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:56:36,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-23 22:56:36,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:56:36,179 INFO L225 Difference]: With dead ends: 24 [2019-11-23 22:56:36,179 INFO L226 Difference]: Without dead ends: 10 [2019-11-23 22:56:36,185 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:56:36,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-23 22:56:36,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-23 22:56:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 22:56:36,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-11-23 22:56:36,233 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 7 [2019-11-23 22:56:36,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:56:36,234 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-23 22:56:36,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:56:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2019-11-23 22:56:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:56:36,235 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:56:36,235 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:56:36,236 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:56:36,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:56:36,236 INFO L82 PathProgramCache]: Analyzing trace with hash -2103611297, now seen corresponding path program 1 times [2019-11-23 22:56:36,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:56:36,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683894295] [2019-11-23 22:56:36,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:56:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:56:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:56:36,316 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683894295] [2019-11-23 22:56:36,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:56:36,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:56:36,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027521057] [2019-11-23 22:56:36,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:56:36,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:56:36,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:56:36,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:56:36,320 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand 3 states. [2019-11-23 22:56:36,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:56:36,342 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2019-11-23 22:56:36,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:56:36,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-23 22:56:36,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:56:36,343 INFO L225 Difference]: With dead ends: 18 [2019-11-23 22:56:36,344 INFO L226 Difference]: Without dead ends: 11 [2019-11-23 22:56:36,344 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 [2019-11-23 22:56:36,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-23 22:56:36,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-23 22:56:36,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-23 22:56:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2019-11-23 22:56:36,348 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 8 [2019-11-23 22:56:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:56:36,349 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-23 22:56:36,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:56:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2019-11-23 22:56:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 22:56:36,350 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:56:36,350 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:56:36,351 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:56:36,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:56:36,351 INFO L82 PathProgramCache]: Analyzing trace with hash -904381449, now seen corresponding path program 1 times [2019-11-23 22:56:36,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:56:36,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283870504] [2019-11-23 22:56:36,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:56:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:56:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 22:56:36,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283870504] [2019-11-23 22:56:36,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:56:36,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:56:36,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980972728] [2019-11-23 22:56:36,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:56:36,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:56:36,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:56:36,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:56:36,428 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand 4 states. [2019-11-23 22:56:36,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:56:36,459 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2019-11-23 22:56:36,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:56:36,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-23 22:56:36,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:56:36,461 INFO L225 Difference]: With dead ends: 16 [2019-11-23 22:56:36,461 INFO L226 Difference]: Without dead ends: 11 [2019-11-23 22:56:36,462 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 [2019-11-23 22:56:36,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-23 22:56:36,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-23 22:56:36,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-23 22:56:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-23 22:56:36,466 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2019-11-23 22:56:36,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:56:36,467 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-23 22:56:36,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:56:36,467 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-11-23 22:56:36,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 22:56:36,468 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:56:36,468 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:56:36,468 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:56:36,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:56:36,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2028877912, now seen corresponding path program 1 times [2019-11-23 22:56:36,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:56:36,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910033349] [2019-11-23 22:56:36,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:56:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:56:36,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 22:56:36,535 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910033349] [2019-11-23 22:56:36,537 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892046524] [2019-11-23 22:56:36,537 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 [2019-11-23 22:56:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:56:36,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:56:36,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:56:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 22:56:36,687 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:56:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 22:56:36,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1351904548] [2019-11-23 22:56:36,780 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-23 22:56:36,780 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 22:56:36,790 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 22:56:36,797 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 22:56:36,799 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 22:56:38,774 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 131 [2019-11-23 22:56:45,252 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 187 [2019-11-23 22:56:46,872 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-11-23 22:56:47,016 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 198 [2019-11-23 22:56:53,563 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2019-11-23 22:56:54,933 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2019-11-23 22:56:55,138 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 224 [2019-11-23 22:57:09,423 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 261 [2019-11-23 22:57:12,859 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 269 [2019-11-23 22:57:16,501 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2019-11-23 22:57:16,738 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 278 [2019-11-23 22:57:18,979 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 278 [2019-11-23 22:57:19,146 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2019-11-23 22:57:19,248 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 277 [2019-11-23 22:57:21,457 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 285 [2019-11-23 22:57:23,480 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 301 [2019-11-23 22:57:25,647 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-11-23 22:57:27,907 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2019-11-23 22:57:28,021 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 309 [2019-11-23 22:57:30,248 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2019-11-23 22:57:30,362 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 312 [2019-11-23 22:57:32,476 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 318 [2019-11-23 22:57:32,599 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 312 [2019-11-23 22:57:35,365 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 316 [2019-11-23 22:57:35,600 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 319 [2019-11-23 22:57:37,803 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 324 [2019-11-23 22:57:37,939 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 322 [2019-11-23 22:57:38,064 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 324 [2019-11-23 22:57:38,179 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 325 [2019-11-23 22:57:40,549 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 329 [2019-11-23 22:57:40,678 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 329 [2019-11-23 22:57:43,066 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2019-11-23 22:57:43,187 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 333 [2019-11-23 22:57:45,726 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 341 [2019-11-23 22:57:45,861 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 336 [2019-11-23 22:57:48,662 WARN L192 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2019-11-23 22:57:48,941 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 339 [2019-11-23 22:57:51,741 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-23 22:57:51,862 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 344 [2019-11-23 22:57:54,378 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 348 [2019-11-23 22:57:54,568 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 345 [2019-11-23 22:57:54,700 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 345 [2019-11-23 22:57:54,823 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 346 DAG size of output: 346 [2019-11-23 22:57:58,045 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 353 [2019-11-23 22:57:58,193 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 350 [2019-11-23 22:58:00,935 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2019-11-23 22:58:01,056 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 354 [2019-11-23 22:58:03,550 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 360 [2019-11-23 22:58:03,693 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 358 [2019-11-23 22:58:06,554 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 363 [2019-11-23 22:58:06,696 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 362