/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/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_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:42:46,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:42:46,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:42:46,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-07 01:42:46,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:42:46,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:42:46,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:42:46,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:42:46,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:42:46,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:42:46,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:42:46,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:42:46,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:42:46,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:42:46,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:42:46,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:42:46,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:42:46,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:42:46,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:42:46,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:42:46,586 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 [2019-11-07 01:42:46,608 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:42:46,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:42:46,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:42:46,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:42:46,611 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:42:46,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:42:46,612 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:42:46,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:42:46,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:42:46,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:42:46,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:42:46,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:42:46,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:42:46,615 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:42:46,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:42:46,615 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:42:46,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:42:46,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:42:46,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:42:46,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:42:46,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:42:46,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:42:46,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:42:46,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:42:46,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:42:46,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:42:46,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:42:46,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:42:46,618 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 [2019-11-07 01:42:46,940 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:42:46,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:42:46,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:42:46,958 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:42:46,959 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:42:46,960 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label56.c [2019-11-07 01:42:47,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b2d6696/713562a9758f44beac34af7fddeb06d9/FLAGf0ef05150 [2019-11-07 01:42:47,666 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:42:47,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label56.c [2019-11-07 01:42:47,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b2d6696/713562a9758f44beac34af7fddeb06d9/FLAGf0ef05150 [2019-11-07 01:42:47,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b2d6696/713562a9758f44beac34af7fddeb06d9 [2019-11-07 01:42:47,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:42:47,800 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:42:47,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:42:47,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:42:47,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:42:47,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:42:47" (1/1) ... [2019-11-07 01:42:47,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30256132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:47, skipping insertion in model container [2019-11-07 01:42:47,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:42:47" (1/1) ... [2019-11-07 01:42:47,817 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:42:47,923 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:42:48,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:42:48,775 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:42:49,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:42:49,328 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:42:49,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:49 WrapperNode [2019-11-07 01:42:49,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:42:49,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:42:49,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:42:49,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:42:49,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:49" (1/1) ... [2019-11-07 01:42:49,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:49" (1/1) ... [2019-11-07 01:42:49,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:49" (1/1) ... [2019-11-07 01:42:49,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:49" (1/1) ... [2019-11-07 01:42:49,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:49" (1/1) ... [2019-11-07 01:42:49,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:49" (1/1) ... [2019-11-07 01:42:49,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:49" (1/1) ... [2019-11-07 01:42:49,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:42:49,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:42:49,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:42:49,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:42:49,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:42:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:42:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:42:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-07 01:42:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:42:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-07 01:42:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:42:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:42:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 01:42:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:42:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:42:49,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:42:52,655 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:42:52,656 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 01:42:52,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:42:52 BoogieIcfgContainer [2019-11-07 01:42:52,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:42:52,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:42:52,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:42:52,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:42:52,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:42:47" (1/3) ... [2019-11-07 01:42:52,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@819cdeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:42:52, skipping insertion in model container [2019-11-07 01:42:52,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:49" (2/3) ... [2019-11-07 01:42:52,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@819cdeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:42:52, skipping insertion in model container [2019-11-07 01:42:52,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:42:52" (3/3) ... [2019-11-07 01:42:52,676 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label56.c [2019-11-07 01:42:52,688 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:42:52,695 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:42:52,707 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:42:52,735 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:42:52,735 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:42:52,736 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:42:52,736 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:42:52,736 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:42:52,736 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:42:52,736 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:42:52,736 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:42:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-11-07 01:42:52,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 01:42:52,775 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:42:52,776 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:42:52,778 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:42:52,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:42:52,785 INFO L82 PathProgramCache]: Analyzing trace with hash 268795079, now seen corresponding path program 1 times [2019-11-07 01:42:52,795 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:42:52,795 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611615838] [2019-11-07 01:42:52,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:42:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:42:53,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:42:53,514 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611615838] [2019-11-07 01:42:53,515 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:42:53,515 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:42:53,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958077464] [2019-11-07 01:42:53,525 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:42:53,525 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:42:53,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:42:53,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:42:53,544 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2019-11-07 01:42:54,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:42:54,695 INFO L93 Difference]: Finished difference Result 462 states and 886 transitions. [2019-11-07 01:42:54,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:42:54,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-11-07 01:42:54,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:42:54,724 INFO L225 Difference]: With dead ends: 462 [2019-11-07 01:42:54,725 INFO L226 Difference]: Without dead ends: 301 [2019-11-07 01:42:54,729 INFO L630 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 [2019-11-07 01:42:54,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-11-07 01:42:54,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2019-11-07 01:42:54,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-11-07 01:42:54,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 535 transitions. [2019-11-07 01:42:54,804 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 535 transitions. Word has length 149 [2019-11-07 01:42:54,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:42:54,806 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 535 transitions. [2019-11-07 01:42:54,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:42:54,806 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 535 transitions. [2019-11-07 01:42:54,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-11-07 01:42:54,812 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:42:54,813 INFO L410 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] [2019-11-07 01:42:54,813 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:42:54,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:42:54,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1139431629, now seen corresponding path program 1 times [2019-11-07 01:42:54,814 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:42:54,814 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226125393] [2019-11-07 01:42:54,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:42:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:42:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:42:55,151 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226125393] [2019-11-07 01:42:55,152 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:42:55,152 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:42:55,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790699968] [2019-11-07 01:42:55,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:42:55,156 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:42:55,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:42:55,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:42:55,156 INFO L87 Difference]: Start difference. First operand 301 states and 535 transitions. Second operand 3 states. [2019-11-07 01:42:56,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:42:56,237 INFO L93 Difference]: Finished difference Result 891 states and 1606 transitions. [2019-11-07 01:42:56,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:42:56,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-11-07 01:42:56,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:42:56,246 INFO L225 Difference]: With dead ends: 891 [2019-11-07 01:42:56,246 INFO L226 Difference]: Without dead ends: 595 [2019-11-07 01:42:56,256 INFO L630 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 [2019-11-07 01:42:56,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-11-07 01:42:56,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-11-07 01:42:56,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-11-07 01:42:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 983 transitions. [2019-11-07 01:42:56,301 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 983 transitions. Word has length 161 [2019-11-07 01:42:56,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:42:56,302 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 983 transitions. [2019-11-07 01:42:56,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:42:56,303 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 983 transitions. [2019-11-07 01:42:56,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-11-07 01:42:56,310 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:42:56,310 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2019-11-07 01:42:56,311 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:42:56,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:42:56,311 INFO L82 PathProgramCache]: Analyzing trace with hash -763512625, now seen corresponding path program 1 times [2019-11-07 01:42:56,312 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:42:56,312 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861579749] [2019-11-07 01:42:56,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:42:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:42:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:42:56,565 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861579749] [2019-11-07 01:42:56,566 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:42:56,566 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:42:56,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562064463] [2019-11-07 01:42:56,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:42:56,569 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:42:56,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:42:56,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:42:56,570 INFO L87 Difference]: Start difference. First operand 595 states and 983 transitions. Second operand 3 states. [2019-11-07 01:42:57,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:42:57,549 INFO L93 Difference]: Finished difference Result 1773 states and 2983 transitions. [2019-11-07 01:42:57,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:42:57,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2019-11-07 01:42:57,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:42:57,558 INFO L225 Difference]: With dead ends: 1773 [2019-11-07 01:42:57,558 INFO L226 Difference]: Without dead ends: 1183 [2019-11-07 01:42:57,560 INFO L630 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 [2019-11-07 01:42:57,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2019-11-07 01:42:57,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2019-11-07 01:42:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2019-11-07 01:42:57,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1943 transitions. [2019-11-07 01:42:57,610 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1943 transitions. Word has length 163 [2019-11-07 01:42:57,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:42:57,611 INFO L462 AbstractCegarLoop]: Abstraction has 1183 states and 1943 transitions. [2019-11-07 01:42:57,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:42:57,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1943 transitions. [2019-11-07 01:42:57,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-07 01:42:57,618 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:42:57,619 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1] [2019-11-07 01:42:57,619 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:42:57,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:42:57,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1767076692, now seen corresponding path program 1 times [2019-11-07 01:42:57,620 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:42:57,620 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046740142] [2019-11-07 01:42:57,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:42:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:42:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:42:57,761 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046740142] [2019-11-07 01:42:57,762 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:42:57,762 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:42:57,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84098259] [2019-11-07 01:42:57,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:42:57,763 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:42:57,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:42:57,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:42:57,764 INFO L87 Difference]: Start difference. First operand 1183 states and 1943 transitions. Second operand 6 states. [2019-11-07 01:42:59,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:42:59,446 INFO L93 Difference]: Finished difference Result 3649 states and 6586 transitions. [2019-11-07 01:42:59,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 01:42:59,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2019-11-07 01:42:59,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:42:59,470 INFO L225 Difference]: With dead ends: 3649 [2019-11-07 01:42:59,470 INFO L226 Difference]: Without dead ends: 2471 [2019-11-07 01:42:59,475 INFO L630 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 [2019-11-07 01:42:59,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2019-11-07 01:42:59,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2397. [2019-11-07 01:42:59,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2397 states. [2019-11-07 01:42:59,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 4013 transitions. [2019-11-07 01:42:59,590 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 4013 transitions. Word has length 166 [2019-11-07 01:42:59,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:42:59,590 INFO L462 AbstractCegarLoop]: Abstraction has 2397 states and 4013 transitions. [2019-11-07 01:42:59,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:42:59,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 4013 transitions. [2019-11-07 01:42:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-07 01:42:59,601 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:42:59,602 INFO L410 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] [2019-11-07 01:42:59,602 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:42:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:42:59,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1452481995, now seen corresponding path program 1 times [2019-11-07 01:42:59,603 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:42:59,603 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644202071] [2019-11-07 01:42:59,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:42:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:42:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:42:59,739 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644202071] [2019-11-07 01:42:59,739 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:42:59,740 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:42:59,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793693110] [2019-11-07 01:42:59,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:42:59,741 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:42:59,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:42:59,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:42:59,742 INFO L87 Difference]: Start difference. First operand 2397 states and 4013 transitions. Second operand 6 states. [2019-11-07 01:43:01,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:43:01,050 INFO L93 Difference]: Finished difference Result 7162 states and 13203 transitions. [2019-11-07 01:43:01,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 01:43:01,054 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2019-11-07 01:43:01,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:43:01,088 INFO L225 Difference]: With dead ends: 7162 [2019-11-07 01:43:01,089 INFO L226 Difference]: Without dead ends: 4770 [2019-11-07 01:43:01,097 INFO L630 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 [2019-11-07 01:43:01,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4770 states. [2019-11-07 01:43:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4770 to 4694. [2019-11-07 01:43:01,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4694 states. [2019-11-07 01:43:01,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 7852 transitions. [2019-11-07 01:43:01,297 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 7852 transitions. Word has length 171 [2019-11-07 01:43:01,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:43:01,297 INFO L462 AbstractCegarLoop]: Abstraction has 4694 states and 7852 transitions. [2019-11-07 01:43:01,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:43:01,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 7852 transitions. [2019-11-07 01:43:01,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-11-07 01:43:01,314 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:43:01,315 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-11-07 01:43:01,315 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:43:01,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:43:01,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1765869504, now seen corresponding path program 1 times [2019-11-07 01:43:01,316 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:43:01,316 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135746049] [2019-11-07 01:43:01,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:43:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:43:01,451 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:43:01,451 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135746049] [2019-11-07 01:43:01,452 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095552764] [2019-11-07 01:43:01,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:43:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:43:01,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:43:01,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:43:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 01:43:01,913 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:43:02,006 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 01:43:02,007 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 01:43:02,007 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2019-11-07 01:43:02,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521338733] [2019-11-07 01:43:02,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:43:02,008 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:43:02,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:43:02,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:43:02,010 INFO L87 Difference]: Start difference. First operand 4694 states and 7852 transitions. Second operand 3 states. [2019-11-07 01:43:03,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:43:03,137 INFO L93 Difference]: Finished difference Result 13398 states and 23056 transitions. [2019-11-07 01:43:03,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:43:03,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2019-11-07 01:43:03,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:43:03,193 INFO L225 Difference]: With dead ends: 13398 [2019-11-07 01:43:03,193 INFO L226 Difference]: Without dead ends: 8709 [2019-11-07 01:43:03,209 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 354 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:43:03,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8709 states. [2019-11-07 01:43:03,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8709 to 8266. [2019-11-07 01:43:03,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8266 states. [2019-11-07 01:43:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 14231 transitions. [2019-11-07 01:43:03,611 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 14231 transitions. Word has length 178 [2019-11-07 01:43:03,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:43:03,612 INFO L462 AbstractCegarLoop]: Abstraction has 8266 states and 14231 transitions. [2019-11-07 01:43:03,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:43:03,612 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 14231 transitions. [2019-11-07 01:43:03,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-11-07 01:43:03,649 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:43:03,649 INFO L410 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] [2019-11-07 01:43:03,856 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:43:03,856 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:43:03,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:43:03,857 INFO L82 PathProgramCache]: Analyzing trace with hash 112488247, now seen corresponding path program 1 times [2019-11-07 01:43:03,857 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:43:03,857 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354128714] [2019-11-07 01:43:03,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:43:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:43:04,092 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:43:04,093 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354128714] [2019-11-07 01:43:04,093 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948419575] [2019-11-07 01:43:04,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:43:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:43:04,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 01:43:04,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:43:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 01:43:04,398 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:43:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 01:43:04,460 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 01:43:04,460 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2019-11-07 01:43:04,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525622011] [2019-11-07 01:43:04,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 01:43:04,461 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:43:04,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 01:43:04,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-07 01:43:04,462 INFO L87 Difference]: Start difference. First operand 8266 states and 14231 transitions. Second operand 5 states. [2019-11-07 01:43:05,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:43:05,957 INFO L93 Difference]: Finished difference Result 18748 states and 33874 transitions. [2019-11-07 01:43:05,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 01:43:05,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2019-11-07 01:43:05,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:43:06,026 INFO L225 Difference]: With dead ends: 18748 [2019-11-07 01:43:06,026 INFO L226 Difference]: Without dead ends: 10487 [2019-11-07 01:43:06,053 INFO L630 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 [2019-11-07 01:43:06,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10487 states. [2019-11-07 01:43:06,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10487 to 10212. [2019-11-07 01:43:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10212 states. [2019-11-07 01:43:06,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10212 states to 10212 states and 17569 transitions. [2019-11-07 01:43:06,405 INFO L78 Accepts]: Start accepts. Automaton has 10212 states and 17569 transitions. Word has length 183 [2019-11-07 01:43:06,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:43:06,405 INFO L462 AbstractCegarLoop]: Abstraction has 10212 states and 17569 transitions. [2019-11-07 01:43:06,406 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 01:43:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 10212 states and 17569 transitions. [2019-11-07 01:43:06,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-07 01:43:06,440 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:43:06,441 INFO L410 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] [2019-11-07 01:43:06,645 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:43:06,646 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:43:06,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:43:06,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1988359256, now seen corresponding path program 1 times [2019-11-07 01:43:06,647 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:43:06,647 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412233961] [2019-11-07 01:43:06,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:43:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:43:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:43:06,893 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412233961] [2019-11-07 01:43:06,893 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157001704] [2019-11-07 01:43:06,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:43:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:43:07,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-07 01:43:07,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:43:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:43:07,266 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:43:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:43:07,358 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1427733578] [2019-11-07 01:43:07,394 INFO L159 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-11-07 01:43:07,394 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:43:07,401 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:43:07,409 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:43:07,410 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:43:07,753 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 206 for LOIs [2019-11-07 01:43:09,248 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2019-11-07 01:43:09,353 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2019-11-07 01:43:09,979 WARN L191 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2019-11-07 01:43:10,146 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 365 [2019-11-07 01:43:10,534 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 365 [2019-11-07 01:43:10,753 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 377 DAG size of output: 375 [2019-11-07 01:43:11,142 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 377 DAG size of output: 375 [2019-11-07 01:43:11,293 INFO L197 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 170 for LOIs [2019-11-07 01:43:11,634 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 123 [2019-11-07 01:43:11,749 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-11-07 01:43:12,184 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 137 [2019-11-07 01:43:12,399 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-11-07 01:43:13,533 WARN L191 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 144 [2019-11-07 01:43:13,764 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-11-07 01:43:14,921 WARN L191 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 148 [2019-11-07 01:43:15,176 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:43:15,720 WARN L191 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 148 [2019-11-07 01:43:15,973 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:43:18,341 WARN L191 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 367 DAG size of output: 195 [2019-11-07 01:43:19,041 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 195