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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:43:58,230 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-15 01:43:58,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:43:58,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:43:58,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:43:58,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:43:58,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:43:58,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:43:58,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:43:58,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:43:58,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:43:58,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:43:58,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:43:58,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:43:58,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:43:58,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:43:58,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:43:58,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:43:58,316 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 01:43:58,348 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:43:58,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:43:58,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:43:58,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:43:58,355 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:43:58,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:43:58,356 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:43:58,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:43:58,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:43:58,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:43:58,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:43:58,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:43:58,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:43:58,359 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:43:58,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:43:58,359 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:43:58,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:43:58,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:43:58,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:43:58,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:43:58,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:43:58,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:43:58,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:43:58,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:43:58,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:43:58,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:43:58,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:43:58,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:43:58,365 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 01:43:58,649 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:43:58,663 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:43:58,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:43:58,668 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:43:58,669 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:43:58,669 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2019-10-15 01:43:58,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e28b32d6/aa5e0b9bb0e34286b7e2904c649dbdf5/FLAG51a1892db [2019-10-15 01:43:59,432 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:43:59,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2019-10-15 01:43:59,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e28b32d6/aa5e0b9bb0e34286b7e2904c649dbdf5/FLAG51a1892db [2019-10-15 01:43:59,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e28b32d6/aa5e0b9bb0e34286b7e2904c649dbdf5 [2019-10-15 01:43:59,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:43:59,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:43:59,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:43:59,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:43:59,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:43:59,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:43:59" (1/1) ... [2019-10-15 01:43:59,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@430ffa35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:59, skipping insertion in model container [2019-10-15 01:43:59,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:43:59" (1/1) ... [2019-10-15 01:43:59,618 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:43:59,696 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:44:00,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:44:00,471 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:44:00,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:44:00,773 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:44:00,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:00 WrapperNode [2019-10-15 01:44:00,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:44:00,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:44:00,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:44:00,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:44:00,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:00" (1/1) ... [2019-10-15 01:44:00,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:00" (1/1) ... [2019-10-15 01:44:00,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:00" (1/1) ... [2019-10-15 01:44:00,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:00" (1/1) ... [2019-10-15 01:44:00,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:00" (1/1) ... [2019-10-15 01:44:00,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:00" (1/1) ... [2019-10-15 01:44:00,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:00" (1/1) ... [2019-10-15 01:44:00,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:44:00,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:44:00,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:44:00,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:44:00,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:00" (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 01:44:01,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:44:01,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:44:01,064 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:44:01,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:44:01,065 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:44:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:44:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:44:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:44:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:44:01,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:44:01,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:44:04,189 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:44:04,190 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:44:04,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:44:04 BoogieIcfgContainer [2019-10-15 01:44:04,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:44:04,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:44:04,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:44:04,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:44:04,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:43:59" (1/3) ... [2019-10-15 01:44:04,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7622df26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:44:04, skipping insertion in model container [2019-10-15 01:44:04,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:00" (2/3) ... [2019-10-15 01:44:04,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7622df26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:44:04, skipping insertion in model container [2019-10-15 01:44:04,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:44:04" (3/3) ... [2019-10-15 01:44:04,210 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label43.c [2019-10-15 01:44:04,220 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:44:04,230 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:44:04,242 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:44:04,276 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:44:04,277 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:44:04,277 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:44:04,277 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:44:04,277 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:44:04,277 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:44:04,278 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:44:04,278 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:44:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-15 01:44:04,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:44:04,317 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:04,318 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 01:44:04,320 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:04,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:04,327 INFO L82 PathProgramCache]: Analyzing trace with hash 136465446, now seen corresponding path program 1 times [2019-10-15 01:44:04,337 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:04,337 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240844228] [2019-10-15 01:44:04,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:04,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:04,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:05,247 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 01:44:05,248 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240844228] [2019-10-15 01:44:05,249 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:05,249 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:44:05,250 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851221890] [2019-10-15 01:44:05,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:44:05,257 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:05,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:44:05,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:44:05,269 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 4 states. [2019-10-15 01:44:06,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:06,815 INFO L93 Difference]: Finished difference Result 613 states and 1182 transitions. [2019-10-15 01:44:06,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:44:06,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-15 01:44:06,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:06,839 INFO L225 Difference]: With dead ends: 613 [2019-10-15 01:44:06,840 INFO L226 Difference]: Without dead ends: 448 [2019-10-15 01:44:06,845 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:44:06,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-10-15 01:44:06,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 301. [2019-10-15 01:44:06,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-15 01:44:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 570 transitions. [2019-10-15 01:44:06,924 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 570 transitions. Word has length 149 [2019-10-15 01:44:06,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:06,926 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 570 transitions. [2019-10-15 01:44:06,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:44:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 570 transitions. [2019-10-15 01:44:06,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-15 01:44:06,932 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:06,933 INFO L380 BasicCegarLoop]: trace histogram [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, 1] [2019-10-15 01:44:06,933 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:06,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:06,933 INFO L82 PathProgramCache]: Analyzing trace with hash 243766760, now seen corresponding path program 1 times [2019-10-15 01:44:06,934 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:06,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900329608] [2019-10-15 01:44:06,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:06,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:06,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:07,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:07,192 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900329608] [2019-10-15 01:44:07,193 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:07,193 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:44:07,193 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986485964] [2019-10-15 01:44:07,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:44:07,199 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:07,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:44:07,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:44:07,200 INFO L87 Difference]: Start difference. First operand 301 states and 570 transitions. Second operand 5 states. [2019-10-15 01:44:08,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:08,570 INFO L93 Difference]: Finished difference Result 917 states and 1764 transitions. [2019-10-15 01:44:08,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:44:08,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2019-10-15 01:44:08,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:08,579 INFO L225 Difference]: With dead ends: 917 [2019-10-15 01:44:08,579 INFO L226 Difference]: Without dead ends: 621 [2019-10-15 01:44:08,582 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:44:08,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-15 01:44:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 605. [2019-10-15 01:44:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-10-15 01:44:08,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 1112 transitions. [2019-10-15 01:44:08,633 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 1112 transitions. Word has length 157 [2019-10-15 01:44:08,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:08,633 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 1112 transitions. [2019-10-15 01:44:08,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:44:08,633 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 1112 transitions. [2019-10-15 01:44:08,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-15 01:44:08,640 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:08,640 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 01:44:08,640 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:08,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:08,641 INFO L82 PathProgramCache]: Analyzing trace with hash 558835389, now seen corresponding path program 1 times [2019-10-15 01:44:08,641 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:08,642 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478501067] [2019-10-15 01:44:08,642 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:08,642 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:08,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:08,820 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 01:44:08,821 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478501067] [2019-10-15 01:44:08,821 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:08,821 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:44:08,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849640963] [2019-10-15 01:44:08,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:44:08,824 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:08,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:44:08,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:44:08,827 INFO L87 Difference]: Start difference. First operand 605 states and 1112 transitions. Second operand 6 states. [2019-10-15 01:44:10,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:10,465 INFO L93 Difference]: Finished difference Result 1879 states and 3733 transitions. [2019-10-15 01:44:10,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:44:10,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2019-10-15 01:44:10,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:10,479 INFO L225 Difference]: With dead ends: 1879 [2019-10-15 01:44:10,479 INFO L226 Difference]: Without dead ends: 1279 [2019-10-15 01:44:10,482 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:44:10,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2019-10-15 01:44:10,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1221. [2019-10-15 01:44:10,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1221 states. [2019-10-15 01:44:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 2240 transitions. [2019-10-15 01:44:10,602 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 2240 transitions. Word has length 158 [2019-10-15 01:44:10,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:10,604 INFO L462 AbstractCegarLoop]: Abstraction has 1221 states and 2240 transitions. [2019-10-15 01:44:10,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:44:10,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 2240 transitions. [2019-10-15 01:44:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:44:10,618 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:10,619 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 01:44:10,619 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:10,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:10,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1532436462, now seen corresponding path program 1 times [2019-10-15 01:44:10,620 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:10,620 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540807089] [2019-10-15 01:44:10,621 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:10,621 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:10,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:10,912 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 01:44:10,912 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540807089] [2019-10-15 01:44:10,912 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:10,913 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:44:10,913 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957210009] [2019-10-15 01:44:10,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:44:10,914 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:10,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:44:10,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:44:10,915 INFO L87 Difference]: Start difference. First operand 1221 states and 2240 transitions. Second operand 3 states. [2019-10-15 01:44:11,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:11,804 INFO L93 Difference]: Finished difference Result 3637 states and 6909 transitions. [2019-10-15 01:44:11,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:44:11,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-15 01:44:11,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:11,823 INFO L225 Difference]: With dead ends: 3637 [2019-10-15 01:44:11,823 INFO L226 Difference]: Without dead ends: 2421 [2019-10-15 01:44:11,827 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 01:44:11,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2019-10-15 01:44:11,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2019-10-15 01:44:11,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2421 states. [2019-10-15 01:44:11,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4302 transitions. [2019-10-15 01:44:11,980 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4302 transitions. Word has length 161 [2019-10-15 01:44:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:11,981 INFO L462 AbstractCegarLoop]: Abstraction has 2421 states and 4302 transitions. [2019-10-15 01:44:11,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:44:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4302 transitions. [2019-10-15 01:44:11,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-15 01:44:11,990 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:11,990 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2019-10-15 01:44:11,990 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:11,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:11,991 INFO L82 PathProgramCache]: Analyzing trace with hash -2126716471, now seen corresponding path program 1 times [2019-10-15 01:44:11,991 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:11,991 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871899621] [2019-10-15 01:44:11,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:11,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:11,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:12,134 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871899621] [2019-10-15 01:44:12,134 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:12,135 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:44:12,135 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479756581] [2019-10-15 01:44:12,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:44:12,136 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:12,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:44:12,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:44:12,140 INFO L87 Difference]: Start difference. First operand 2421 states and 4302 transitions. Second operand 6 states. [2019-10-15 01:44:13,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:13,596 INFO L93 Difference]: Finished difference Result 7089 states and 14040 transitions. [2019-10-15 01:44:13,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:44:13,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2019-10-15 01:44:13,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:13,632 INFO L225 Difference]: With dead ends: 7089 [2019-10-15 01:44:13,632 INFO L226 Difference]: Without dead ends: 4673 [2019-10-15 01:44:13,641 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 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 01:44:13,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4673 states. [2019-10-15 01:44:13,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4673 to 4587. [2019-10-15 01:44:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4587 states. [2019-10-15 01:44:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 7937 transitions. [2019-10-15 01:44:13,842 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 7937 transitions. Word has length 168 [2019-10-15 01:44:13,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:13,842 INFO L462 AbstractCegarLoop]: Abstraction has 4587 states and 7937 transitions. [2019-10-15 01:44:13,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:44:13,842 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 7937 transitions. [2019-10-15 01:44:13,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:44:13,857 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:13,858 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:13,858 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:13,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:13,858 INFO L82 PathProgramCache]: Analyzing trace with hash 700926954, now seen corresponding path program 1 times [2019-10-15 01:44:13,859 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:13,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197628161] [2019-10-15 01:44:13,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:13,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:13,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:13,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197628161] [2019-10-15 01:44:13,998 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:13,998 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:44:13,999 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676915693] [2019-10-15 01:44:13,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:44:14,000 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:14,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:44:14,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:44:14,001 INFO L87 Difference]: Start difference. First operand 4587 states and 7937 transitions. Second operand 6 states. [2019-10-15 01:44:15,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:15,526 INFO L93 Difference]: Finished difference Result 10680 states and 19949 transitions. [2019-10-15 01:44:15,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:44:15,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2019-10-15 01:44:15,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:15,574 INFO L225 Difference]: With dead ends: 10680 [2019-10-15 01:44:15,574 INFO L226 Difference]: Without dead ends: 6098 [2019-10-15 01:44:15,591 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 01:44:15,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6098 states. [2019-10-15 01:44:15,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6098 to 5964. [2019-10-15 01:44:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5964 states. [2019-10-15 01:44:15,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5964 states to 5964 states and 9941 transitions. [2019-10-15 01:44:15,891 INFO L78 Accepts]: Start accepts. Automaton has 5964 states and 9941 transitions. Word has length 171 [2019-10-15 01:44:15,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:15,891 INFO L462 AbstractCegarLoop]: Abstraction has 5964 states and 9941 transitions. [2019-10-15 01:44:15,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:44:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand 5964 states and 9941 transitions. [2019-10-15 01:44:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-15 01:44:15,921 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:15,930 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:15,931 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:15,932 INFO L82 PathProgramCache]: Analyzing trace with hash -561584426, now seen corresponding path program 1 times [2019-10-15 01:44:15,932 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:15,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822303482] [2019-10-15 01:44:15,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:15,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:15,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:16,113 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822303482] [2019-10-15 01:44:16,113 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001188806] [2019-10-15 01:44:16,113 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 01:44:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:16,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:44:16,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:44:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:44:16,459 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:44:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:44:16,541 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:44:16,541 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2019-10-15 01:44:16,541 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588748641] [2019-10-15 01:44:16,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:44:16,542 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:16,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:44:16,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:44:16,543 INFO L87 Difference]: Start difference. First operand 5964 states and 9941 transitions. Second operand 5 states. [2019-10-15 01:44:18,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:18,041 INFO L93 Difference]: Finished difference Result 17184 states and 31006 transitions. [2019-10-15 01:44:18,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:44:18,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2019-10-15 01:44:18,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:18,141 INFO L225 Difference]: With dead ends: 17184 [2019-10-15 01:44:18,142 INFO L226 Difference]: Without dead ends: 11225 [2019-10-15 01:44:18,168 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:44:18,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11225 states. [2019-10-15 01:44:18,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11225 to 11079. [2019-10-15 01:44:18,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11079 states. [2019-10-15 01:44:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11079 states to 11079 states and 18790 transitions. [2019-10-15 01:44:18,833 INFO L78 Accepts]: Start accepts. Automaton has 11079 states and 18790 transitions. Word has length 183 [2019-10-15 01:44:18,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:18,834 INFO L462 AbstractCegarLoop]: Abstraction has 11079 states and 18790 transitions. [2019-10-15 01:44:18,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:44:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 11079 states and 18790 transitions. [2019-10-15 01:44:19,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-15 01:44:19,063 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:19,064 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:44:19,268 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:44:19,269 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:19,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:19,269 INFO L82 PathProgramCache]: Analyzing trace with hash -733583127, now seen corresponding path program 1 times [2019-10-15 01:44:19,270 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:19,270 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622321623] [2019-10-15 01:44:19,270 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:19,270 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:19,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:19,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622321623] [2019-10-15 01:44:19,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471462348] [2019-10-15 01:44:19,500 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 01:44:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:19,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:44:19,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:44:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:19,845 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:44:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:19,970 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [917108826] [2019-10-15 01:44:20,048 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-10-15 01:44:20,049 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:44:20,061 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:44:20,078 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:44:20,079 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:44:20,903 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-10-15 01:44:21,189 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 206 for LOIs [2019-10-15 01:44:21,485 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-10-15 01:44:21,744 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-10-15 01:44:22,022 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-15 01:44:23,147 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 275 [2019-10-15 01:44:23,533 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-10-15 01:44:24,458 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-10-15 01:44:24,651 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2019-10-15 01:44:25,051 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2019-10-15 01:44:25,153 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2019-10-15 01:44:25,414 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 365 [2019-10-15 01:44:26,095 WARN L191 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 366 [2019-10-15 01:44:26,237 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 366 [2019-10-15 01:44:26,408 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 368 [2019-10-15 01:44:26,525 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2019-10-15 01:44:26,752 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-10-15 01:44:27,197 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-10-15 01:44:27,699 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 365 [2019-10-15 01:44:27,815 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2019-10-15 01:44:27,978 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 366 [2019-10-15 01:44:28,179 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 366 [2019-10-15 01:44:28,359 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 367 [2019-10-15 01:44:29,049 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-10-15 01:44:29,616 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 366 [2019-10-15 01:44:29,743 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2019-10-15 01:44:29,943 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 366