java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:43:42,449 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-15 01:43:42,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:43:42,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:43:42,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:43:42,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:43:42,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:43:42,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:43:42,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:43:42,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:43:42,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:43:42,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:43:42,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:43:42,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:43:42,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:43:42,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:43:42,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:43:42,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:43:42,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:43:42,555 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:43:42,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:43:42,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:43:42,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:43:42,557 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:43:42,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:43:42,558 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:43:42,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:43:42,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:43:42,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:43:42,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:43:42,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:43:42,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:43:42,559 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:43:42,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:43:42,559 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:43:42,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:43:42,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:43:42,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:43:42,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:43:42,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:43:42,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:43:42,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:43:42,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:43:42,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:43:42,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:43:42,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:43:42,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:43:42,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 01:43:42,823 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:43:42,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:43:42,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:43:42,839 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:43:42,840 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:43:42,840 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label29.c [2019-10-15 01:43:42,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e78a8a1/b3df9020242b4465a7dde22a1981486a/FLAG9c454aae6 [2019-10-15 01:43:43,517 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:43:43,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label29.c [2019-10-15 01:43:43,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e78a8a1/b3df9020242b4465a7dde22a1981486a/FLAG9c454aae6 [2019-10-15 01:43:43,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e78a8a1/b3df9020242b4465a7dde22a1981486a [2019-10-15 01:43:43,732 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:43:43,734 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:43:43,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:43:43,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:43:43,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:43:43,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:43:43" (1/1) ... [2019-10-15 01:43:43,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32777701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:43, skipping insertion in model container [2019-10-15 01:43:43,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:43:43" (1/1) ... [2019-10-15 01:43:43,753 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:43:43,831 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:43:44,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:43:44,732 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:43:45,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:43:45,036 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:43:45,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:45 WrapperNode [2019-10-15 01:43:45,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:43:45,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:43:45,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:43:45,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:43:45,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:45" (1/1) ... [2019-10-15 01:43:45,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:45" (1/1) ... [2019-10-15 01:43:45,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:45" (1/1) ... [2019-10-15 01:43:45,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:45" (1/1) ... [2019-10-15 01:43:45,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:45" (1/1) ... [2019-10-15 01:43:45,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:45" (1/1) ... [2019-10-15 01:43:45,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:45" (1/1) ... [2019-10-15 01:43:45,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:43:45,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:43:45,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:43:45,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:43:45,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:45" (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 [2019-10-15 01:43:45,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:43:45,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:43:45,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:43:45,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:43:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:43:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:43:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:43:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:43:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:43:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:43:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:43:48,311 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:43:48,312 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:43:48,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:43:48 BoogieIcfgContainer [2019-10-15 01:43:48,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:43:48,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:43:48,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:43:48,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:43:48,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:43:43" (1/3) ... [2019-10-15 01:43:48,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7929f274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:43:48, skipping insertion in model container [2019-10-15 01:43:48,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:45" (2/3) ... [2019-10-15 01:43:48,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7929f274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:43:48, skipping insertion in model container [2019-10-15 01:43:48,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:43:48" (3/3) ... [2019-10-15 01:43:48,324 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label29.c [2019-10-15 01:43:48,334 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:43:48,346 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:43:48,358 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:43:48,394 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:43:48,394 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:43:48,394 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:43:48,395 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:43:48,395 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:43:48,395 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:43:48,395 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:43:48,396 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:43:48,425 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-15 01:43:48,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:43:48,444 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:48,445 INFO L380 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, 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, 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, 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] [2019-10-15 01:43:48,447 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:48,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:48,453 INFO L82 PathProgramCache]: Analyzing trace with hash 136472614, now seen corresponding path program 1 times [2019-10-15 01:43:48,462 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:48,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539663381] [2019-10-15 01:43:48,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:48,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:48,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:49,228 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539663381] [2019-10-15 01:43:49,229 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:43:49,229 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:43:49,229 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264231861] [2019-10-15 01:43:49,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:43:49,235 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:49,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:43:49,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:49,251 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2019-10-15 01:43:50,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:50,312 INFO L93 Difference]: Finished difference Result 462 states and 886 transitions. [2019-10-15 01:43:50,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:43:50,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-15 01:43:50,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:50,334 INFO L225 Difference]: With dead ends: 462 [2019-10-15 01:43:50,334 INFO L226 Difference]: Without dead ends: 301 [2019-10-15 01:43:50,339 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:50,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-10-15 01:43:50,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2019-10-15 01:43:50,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-15 01:43:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 564 transitions. [2019-10-15 01:43:50,419 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 564 transitions. Word has length 149 [2019-10-15 01:43:50,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:50,420 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 564 transitions. [2019-10-15 01:43:50,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:43:50,420 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 564 transitions. [2019-10-15 01:43:50,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-15 01:43:50,432 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:50,433 INFO L380 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2019-10-15 01:43:50,433 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:50,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:50,434 INFO L82 PathProgramCache]: Analyzing trace with hash 558842557, now seen corresponding path program 1 times [2019-10-15 01:43:50,434 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:50,435 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792741124] [2019-10-15 01:43:50,435 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:50,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:50,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:50,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:50,599 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792741124] [2019-10-15 01:43:50,599 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:43:50,600 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:43:50,600 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950427859] [2019-10-15 01:43:50,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:43:50,602 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:50,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:43:50,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:43:50,603 INFO L87 Difference]: Start difference. First operand 301 states and 564 transitions. Second operand 6 states. [2019-10-15 01:43:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:51,974 INFO L93 Difference]: Finished difference Result 929 states and 1794 transitions. [2019-10-15 01:43:51,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:43:51,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2019-10-15 01:43:51,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:51,985 INFO L225 Difference]: With dead ends: 929 [2019-10-15 01:43:51,985 INFO L226 Difference]: Without dead ends: 633 [2019-10-15 01:43:51,988 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:43:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-15 01:43:52,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 603. [2019-10-15 01:43:52,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-15 01:43:52,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1113 transitions. [2019-10-15 01:43:52,053 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1113 transitions. Word has length 158 [2019-10-15 01:43:52,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:52,054 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 1113 transitions. [2019-10-15 01:43:52,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:43:52,054 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1113 transitions. [2019-10-15 01:43:52,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:43:52,059 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:52,059 INFO L380 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2019-10-15 01:43:52,060 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:52,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:52,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1532429294, now seen corresponding path program 1 times [2019-10-15 01:43:52,060 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:52,061 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636555058] [2019-10-15 01:43:52,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:52,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:52,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:52,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:52,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636555058] [2019-10-15 01:43:52,419 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:43:52,420 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:43:52,421 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290574674] [2019-10-15 01:43:52,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:43:52,423 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:52,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:43:52,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:52,429 INFO L87 Difference]: Start difference. First operand 603 states and 1113 transitions. Second operand 3 states. [2019-10-15 01:43:53,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:53,441 INFO L93 Difference]: Finished difference Result 1795 states and 3387 transitions. [2019-10-15 01:43:53,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:43:53,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-15 01:43:53,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:53,457 INFO L225 Difference]: With dead ends: 1795 [2019-10-15 01:43:53,457 INFO L226 Difference]: Without dead ends: 1197 [2019-10-15 01:43:53,460 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:53,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2019-10-15 01:43:53,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1197. [2019-10-15 01:43:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2019-10-15 01:43:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 2199 transitions. [2019-10-15 01:43:53,521 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 2199 transitions. Word has length 161 [2019-10-15 01:43:53,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:53,523 INFO L462 AbstractCegarLoop]: Abstraction has 1197 states and 2199 transitions. [2019-10-15 01:43:53,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:43:53,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 2199 transitions. [2019-10-15 01:43:53,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:43:53,531 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:53,531 INFO L380 BasicCegarLoop]: trace histogram [3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:43:53,532 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:53,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:53,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1521645618, now seen corresponding path program 1 times [2019-10-15 01:43:53,533 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:53,533 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406274625] [2019-10-15 01:43:53,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:53,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:53,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:53,663 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:43:53,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406274625] [2019-10-15 01:43:53,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201222771] [2019-10-15 01:43:53,664 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 [2019-10-15 01:43:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:53,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:43:53,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:43:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 01:43:54,026 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:43:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:43:54,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:43:54,169 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2019-10-15 01:43:54,169 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17549840] [2019-10-15 01:43:54,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:43:54,171 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:54,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:43:54,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:43:54,172 INFO L87 Difference]: Start difference. First operand 1197 states and 2199 transitions. Second operand 5 states. [2019-10-15 01:43:55,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:55,346 INFO L93 Difference]: Finished difference Result 3665 states and 7306 transitions. [2019-10-15 01:43:55,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:43:55,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2019-10-15 01:43:55,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:55,367 INFO L225 Difference]: With dead ends: 3665 [2019-10-15 01:43:55,367 INFO L226 Difference]: Without dead ends: 2473 [2019-10-15 01:43:55,371 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 337 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:43:55,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2019-10-15 01:43:55,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2419. [2019-10-15 01:43:55,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2419 states. [2019-10-15 01:43:55,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2419 states to 2419 states and 4339 transitions. [2019-10-15 01:43:55,479 INFO L78 Accepts]: Start accepts. Automaton has 2419 states and 4339 transitions. Word has length 171 [2019-10-15 01:43:55,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:55,480 INFO L462 AbstractCegarLoop]: Abstraction has 2419 states and 4339 transitions. [2019-10-15 01:43:55,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:43:55,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2419 states and 4339 transitions. [2019-10-15 01:43:55,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 01:43:55,489 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:55,489 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 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, 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, 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] [2019-10-15 01:43:55,694 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:43:55,695 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:55,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:55,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1881797470, now seen corresponding path program 1 times [2019-10-15 01:43:55,696 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:55,697 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201138598] [2019-10-15 01:43:55,697 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:55,697 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:55,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:55,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201138598] [2019-10-15 01:43:55,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000098065] [2019-10-15 01:43:55,820 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 [2019-10-15 01:43:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:56,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:43:56,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:43:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:43:56,214 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:43:56,323 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:43:56,323 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:43:56,324 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2019-10-15 01:43:56,324 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903787797] [2019-10-15 01:43:56,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:43:56,326 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:56,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:43:56,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:43:56,326 INFO L87 Difference]: Start difference. First operand 2419 states and 4339 transitions. Second operand 5 states. [2019-10-15 01:43:56,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:56,783 INFO L93 Difference]: Finished difference Result 7257 states and 13232 transitions. [2019-10-15 01:43:56,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:43:56,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2019-10-15 01:43:56,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:56,824 INFO L225 Difference]: With dead ends: 7257 [2019-10-15 01:43:56,825 INFO L226 Difference]: Without dead ends: 4843 [2019-10-15 01:43:56,832 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 350 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:43:56,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4843 states. [2019-10-15 01:43:56,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4843 to 4835. [2019-10-15 01:43:56,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4835 states. [2019-10-15 01:43:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 8834 transitions. [2019-10-15 01:43:57,018 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 8834 transitions. Word has length 179 [2019-10-15 01:43:57,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:57,018 INFO L462 AbstractCegarLoop]: Abstraction has 4835 states and 8834 transitions. [2019-10-15 01:43:57,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:43:57,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 8834 transitions. [2019-10-15 01:43:57,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-15 01:43:57,039 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:57,040 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:43:57,244 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:43:57,245 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:57,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:57,246 INFO L82 PathProgramCache]: Analyzing trace with hash 2106578126, now seen corresponding path program 1 times [2019-10-15 01:43:57,246 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:57,246 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349140337] [2019-10-15 01:43:57,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:57,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:57,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:57,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349140337] [2019-10-15 01:43:57,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654990877] [2019-10-15 01:43:57,368 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 [2019-10-15 01:43:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:57,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:43:57,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:43:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:43:57,664 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:43:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:43:57,728 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:43:57,729 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2019-10-15 01:43:57,729 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907765417] [2019-10-15 01:43:57,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:43:57,730 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:57,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:43:57,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:43:57,731 INFO L87 Difference]: Start difference. First operand 4835 states and 8834 transitions. Second operand 3 states. [2019-10-15 01:43:58,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:58,631 INFO L93 Difference]: Finished difference Result 14282 states and 26830 transitions. [2019-10-15 01:43:58,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:43:58,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2019-10-15 01:43:58,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:58,693 INFO L225 Difference]: With dead ends: 14282 [2019-10-15 01:43:58,693 INFO L226 Difference]: Without dead ends: 9452 [2019-10-15 01:43:58,709 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 372 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:43:58,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9452 states. [2019-10-15 01:43:58,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9452 to 9452. [2019-10-15 01:43:58,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9452 states. [2019-10-15 01:43:59,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9452 states to 9452 states and 17601 transitions. [2019-10-15 01:43:59,010 INFO L78 Accepts]: Start accepts. Automaton has 9452 states and 17601 transitions. Word has length 187 [2019-10-15 01:43:59,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:59,011 INFO L462 AbstractCegarLoop]: Abstraction has 9452 states and 17601 transitions. [2019-10-15 01:43:59,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:43:59,011 INFO L276 IsEmpty]: Start isEmpty. Operand 9452 states and 17601 transitions. [2019-10-15 01:43:59,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-15 01:43:59,047 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:59,047 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:43:59,259 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:43:59,260 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:59,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:59,262 INFO L82 PathProgramCache]: Analyzing trace with hash 267570982, now seen corresponding path program 1 times [2019-10-15 01:43:59,262 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:59,262 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665341856] [2019-10-15 01:43:59,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:59,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:59,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 51 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 01:43:59,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665341856] [2019-10-15 01:43:59,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426950510] [2019-10-15 01:43:59,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:43:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:59,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:43:59,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:43:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 01:43:59,961 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:44:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 51 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 01:44:00,078 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [747242303] [2019-10-15 01:44:00,137 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-10-15 01:44:00,138 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:44:00,145 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:44:00,154 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:44:00,155 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:44:01,112 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-15 01:44:01,262 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 210 for LOIs [2019-10-15 01:44:01,536 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-10-15 01:44:01,804 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-10-15 01:44:02,102 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-15 01:44:02,415 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2019-10-15 01:44:03,368 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 309 [2019-10-15 01:44:05,821 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 267 [2019-10-15 01:44:06,119 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2019-10-15 01:44:06,326 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 224 [2019-10-15 01:44:07,692 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-10-15 01:44:07,796 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-10-15 01:44:08,062 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 373 DAG size of output: 369 [2019-10-15 01:44:08,199 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2019-10-15 01:44:08,363 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2019-10-15 01:44:08,586 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 374 DAG size of output: 372 [2019-10-15 01:44:08,750 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2019-10-15 01:44:09,819 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 273 [2019-10-15 01:44:10,142 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2019-10-15 01:44:10,341 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 224 [2019-10-15 01:44:11,054 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 267 [2019-10-15 01:44:11,588 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 369 [2019-10-15 01:44:11,691 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-10-15 01:44:11,833 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 370 [2019-10-15 01:44:12,030 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2019-10-15 01:44:12,194 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 371 DAG size of output: 371 [2019-10-15 01:44:13,032 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 273 [2019-10-15 01:44:13,481 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 224 [2019-10-15 01:44:14,104 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 269 [2019-10-15 01:44:14,625 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 370 [2019-10-15 01:44:14,734 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-10-15 01:44:14,891 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 370 [2019-10-15 01:44:15,215 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 373 DAG size of output: 373 [2019-10-15 01:44:15,387 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 379 DAG size of output: 374