/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_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:41:48,118 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-07 01:41:48,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:41:48,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:41:48,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:41:48,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:41:48,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:41:48,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:41:48,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:41:48,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:41:48,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:41:48,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:41:48,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:41:48,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:41:48,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:41:48,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:41:48,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:41:48,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:41:48,203 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 01:41:48,235 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:41:48,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:41:48,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:41:48,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:41:48,236 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:41:48,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:41:48,237 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:41:48,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:41:48,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:41:48,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:41:48,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:41:48,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:41:48,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:41:48,238 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:41:48,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:41:48,239 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:41:48,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:41:48,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:41:48,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:41:48,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:41:48,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:41:48,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:41:48,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:41:48,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:41:48,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:41:48,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:41:48,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:41:48,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:41:48,241 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 01:41:48,508 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:41:48,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:41:48,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:41:48,535 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:41:48,535 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:41:48,536 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2019-11-07 01:41:48,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83319f40c/3274849f35ed41aca948d3e014ee0b8b/FLAGc659637a3 [2019-11-07 01:41:49,211 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:41:49,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2019-11-07 01:41:49,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83319f40c/3274849f35ed41aca948d3e014ee0b8b/FLAGc659637a3 [2019-11-07 01:41:49,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83319f40c/3274849f35ed41aca948d3e014ee0b8b [2019-11-07 01:41:49,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:41:49,471 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:41:49,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:41:49,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:41:49,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:41:49,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:49" (1/1) ... [2019-11-07 01:41:49,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d482f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:49, skipping insertion in model container [2019-11-07 01:41:49,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:49" (1/1) ... [2019-11-07 01:41:49,506 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:41:49,589 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:41:50,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:41:50,379 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:41:50,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:41:50,721 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:41:50,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:50 WrapperNode [2019-11-07 01:41:50,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:41:50,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:41:50,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:41:50,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:41:50,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:50" (1/1) ... [2019-11-07 01:41:50,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:50" (1/1) ... [2019-11-07 01:41:50,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:50" (1/1) ... [2019-11-07 01:41:50,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:50" (1/1) ... [2019-11-07 01:41:50,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:50" (1/1) ... [2019-11-07 01:41:50,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:50" (1/1) ... [2019-11-07 01:41:50,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:50" (1/1) ... [2019-11-07 01:41:50,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:41:50,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:41:50,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:41:50,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:41:50,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:50" (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 01:41:50,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:41:50,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:41:50,982 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-07 01:41:50,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:41:50,983 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-07 01:41:50,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:41:50,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:41:50,983 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 01:41:50,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:41:50,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:41:50,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:41:54,000 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:41:54,000 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 01:41:54,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:41:54 BoogieIcfgContainer [2019-11-07 01:41:54,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:41:54,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:41:54,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:41:54,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:41:54,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:41:49" (1/3) ... [2019-11-07 01:41:54,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d513df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:41:54, skipping insertion in model container [2019-11-07 01:41:54,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:50" (2/3) ... [2019-11-07 01:41:54,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d513df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:41:54, skipping insertion in model container [2019-11-07 01:41:54,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:41:54" (3/3) ... [2019-11-07 01:41:54,012 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label24.c [2019-11-07 01:41:54,023 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:41:54,032 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:41:54,045 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:41:54,082 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:41:54,083 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:41:54,085 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:41:54,085 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:41:54,085 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:41:54,085 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:41:54,086 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:41:54,086 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:41:54,120 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-11-07 01:41:54,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 01:41:54,139 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:41:54,140 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 01:41:54,143 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:41:54,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:41:54,149 INFO L82 PathProgramCache]: Analyzing trace with hash 136475942, now seen corresponding path program 1 times [2019-11-07 01:41:54,158 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:41:54,158 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607287851] [2019-11-07 01:41:54,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:41:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:41:54,935 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 01:41:54,936 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607287851] [2019-11-07 01:41:54,937 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:41:54,937 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:41:54,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046533288] [2019-11-07 01:41:54,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:41:54,945 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:41:54,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:41:54,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:41:54,962 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2019-11-07 01:41:56,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:41:56,150 INFO L93 Difference]: Finished difference Result 462 states and 886 transitions. [2019-11-07 01:41:56,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:41:56,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-11-07 01:41:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:41:56,168 INFO L225 Difference]: With dead ends: 462 [2019-11-07 01:41:56,168 INFO L226 Difference]: Without dead ends: 301 [2019-11-07 01:41:56,172 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 01:41:56,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-11-07 01:41:56,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2019-11-07 01:41:56,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-11-07 01:41:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 535 transitions. [2019-11-07 01:41:56,243 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 535 transitions. Word has length 149 [2019-11-07 01:41:56,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:41:56,244 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 535 transitions. [2019-11-07 01:41:56,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:41:56,245 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 535 transitions. [2019-11-07 01:41:56,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-11-07 01:41:56,250 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:41:56,250 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 01:41:56,250 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:41:56,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:41:56,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1532425966, now seen corresponding path program 1 times [2019-11-07 01:41:56,251 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:41:56,251 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404648722] [2019-11-07 01:41:56,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:41:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:41:56,518 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 01:41:56,519 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404648722] [2019-11-07 01:41:56,519 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:41:56,519 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:41:56,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637708310] [2019-11-07 01:41:56,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:41:56,523 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:41:56,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:41:56,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:41:56,524 INFO L87 Difference]: Start difference. First operand 301 states and 535 transitions. Second operand 3 states. [2019-11-07 01:41:57,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:41:57,680 INFO L93 Difference]: Finished difference Result 891 states and 1606 transitions. [2019-11-07 01:41:57,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:41:57,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-11-07 01:41:57,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:41:57,706 INFO L225 Difference]: With dead ends: 891 [2019-11-07 01:41:57,707 INFO L226 Difference]: Without dead ends: 595 [2019-11-07 01:41:57,711 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 01:41:57,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-11-07 01:41:57,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-11-07 01:41:57,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-11-07 01:41:57,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 970 transitions. [2019-11-07 01:41:57,838 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 970 transitions. Word has length 161 [2019-11-07 01:41:57,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:41:57,842 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 970 transitions. [2019-11-07 01:41:57,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:41:57,843 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 970 transitions. [2019-11-07 01:41:57,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-11-07 01:41:57,860 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:41:57,861 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 01:41:57,861 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:41:57,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:41:57,861 INFO L82 PathProgramCache]: Analyzing trace with hash -478372114, now seen corresponding path program 1 times [2019-11-07 01:41:57,862 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:41:57,862 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202644451] [2019-11-07 01:41:57,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:41:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:41:58,145 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 01:41:58,145 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202644451] [2019-11-07 01:41:58,146 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:41:58,146 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:41:58,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124538947] [2019-11-07 01:41:58,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:41:58,149 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:41:58,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:41:58,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:41:58,150 INFO L87 Difference]: Start difference. First operand 595 states and 970 transitions. Second operand 3 states. [2019-11-07 01:41:59,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:41:59,247 INFO L93 Difference]: Finished difference Result 1773 states and 2941 transitions. [2019-11-07 01:41:59,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:41:59,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2019-11-07 01:41:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:41:59,258 INFO L225 Difference]: With dead ends: 1773 [2019-11-07 01:41:59,258 INFO L226 Difference]: Without dead ends: 1183 [2019-11-07 01:41:59,261 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 01:41:59,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2019-11-07 01:41:59,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2019-11-07 01:41:59,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2019-11-07 01:41:59,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1913 transitions. [2019-11-07 01:41:59,302 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1913 transitions. Word has length 163 [2019-11-07 01:41:59,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:41:59,303 INFO L462 AbstractCegarLoop]: Abstraction has 1183 states and 1913 transitions. [2019-11-07 01:41:59,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:41:59,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1913 transitions. [2019-11-07 01:41:59,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-07 01:41:59,308 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:41:59,309 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 01:41:59,309 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:41:59,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:41:59,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1566269997, now seen corresponding path program 1 times [2019-11-07 01:41:59,310 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:41:59,310 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039219556] [2019-11-07 01:41:59,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:41:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:41:59,446 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 01:41:59,446 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039219556] [2019-11-07 01:41:59,447 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:41:59,447 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:41:59,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426364449] [2019-11-07 01:41:59,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:41:59,450 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:41:59,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:41:59,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:41:59,451 INFO L87 Difference]: Start difference. First operand 1183 states and 1913 transitions. Second operand 6 states. [2019-11-07 01:42:01,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:42:01,005 INFO L93 Difference]: Finished difference Result 3663 states and 6645 transitions. [2019-11-07 01:42:01,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 01:42:01,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2019-11-07 01:42:01,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:42:01,032 INFO L225 Difference]: With dead ends: 3663 [2019-11-07 01:42:01,033 INFO L226 Difference]: Without dead ends: 2485 [2019-11-07 01:42:01,038 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 01:42:01,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2019-11-07 01:42:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2403. [2019-11-07 01:42:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2019-11-07 01:42:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3970 transitions. [2019-11-07 01:42:01,160 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3970 transitions. Word has length 166 [2019-11-07 01:42:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:42:01,160 INFO L462 AbstractCegarLoop]: Abstraction has 2403 states and 3970 transitions. [2019-11-07 01:42:01,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:42:01,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3970 transitions. [2019-11-07 01:42:01,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-11-07 01:42:01,171 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:42:01,172 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 01:42:01,172 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:42:01,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:42:01,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1349583205, now seen corresponding path program 1 times [2019-11-07 01:42:01,173 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:42:01,173 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207272083] [2019-11-07 01:42:01,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:42:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:42:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:42:01,359 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207272083] [2019-11-07 01:42:01,359 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744603777] [2019-11-07 01:42:01,359 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 01:42:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:42:01,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:42:01,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:42:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:42:01,704 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:42:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:42:01,824 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1417227251] [2019-11-07 01:42:01,890 INFO L159 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-11-07 01:42:01,890 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:42:01,898 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:42:01,906 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:42:01,907 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:42:02,381 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 206 for LOIs [2019-11-07 01:42:03,994 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-11-07 01:42:04,137 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-11-07 01:42:04,344 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-11-07 01:42:04,485 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 222 [2019-11-07 01:42:04,804 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-07 01:42:05,130 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 369 [2019-11-07 01:42:05,541 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 369 [2019-11-07 01:42:05,723 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 379 DAG size of output: 377 [2019-11-07 01:42:06,089 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 379 DAG size of output: 377 [2019-11-07 01:42:06,225 INFO L197 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 166 for LOIs [2019-11-07 01:42:06,864 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 111 [2019-11-07 01:42:06,980 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-11-07 01:42:07,371 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 113 [2019-11-07 01:42:07,819 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 115 [2019-11-07 01:42:08,213 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 115 [2019-11-07 01:42:08,524 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 115 [2019-11-07 01:42:09,296 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 115 [2019-11-07 01:42:09,684 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 115 [2019-11-07 01:42:09,809 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:10,117 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 115 [2019-11-07 01:42:10,223 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:10,464 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 115 [2019-11-07 01:42:10,575 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:10,862 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 115 [2019-11-07 01:42:11,010 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:11,308 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 115 [2019-11-07 01:42:11,414 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:11,678 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 115 [2019-11-07 01:42:11,785 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:12,058 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 115 [2019-11-07 01:42:12,165 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:12,448 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 115 [2019-11-07 01:42:12,558 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:12,843 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 115 [2019-11-07 01:42:13,007 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:13,308 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 115 [2019-11-07 01:42:13,413 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:13,710 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 115 [2019-11-07 01:42:13,815 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:14,084 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 115 [2019-11-07 01:42:14,217 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:14,513 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 115 [2019-11-07 01:42:14,666 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:14,898 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 115 [2019-11-07 01:42:15,188 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 115 [2019-11-07 01:42:15,638 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 115 [2019-11-07 01:42:15,950 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 115 [2019-11-07 01:42:16,218 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 115 [2019-11-07 01:42:16,578 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 115 [2019-11-07 01:42:16,924 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 115 [2019-11-07 01:42:17,347 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 115 [2019-11-07 01:42:17,530 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:18,078 WARN L191 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 115 [2019-11-07 01:42:18,203 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:18,407 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 115 [2019-11-07 01:42:18,813 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 115 [2019-11-07 01:42:19,125 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 115 [2019-11-07 01:42:19,454 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 115 [2019-11-07 01:42:19,596 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:20,043 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 115 [2019-11-07 01:42:20,324 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 115 [2019-11-07 01:42:20,673 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 115 [2019-11-07 01:42:21,154 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 115 [2019-11-07 01:42:21,353 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:21,719 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 115 [2019-11-07 01:42:22,241 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 115 [2019-11-07 01:42:22,344 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:22,534 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 115 [2019-11-07 01:42:22,663 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:22,998 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 115 [2019-11-07 01:42:23,488 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 115 [2019-11-07 01:42:23,675 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:23,942 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 115 [2019-11-07 01:42:24,228 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 115 [2019-11-07 01:42:24,697 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 115 [2019-11-07 01:42:24,876 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:25,201 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 115 [2019-11-07 01:42:25,311 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:25,527 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 115 [2019-11-07 01:42:25,683 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:26,003 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 115 [2019-11-07 01:42:26,429 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 115 [2019-11-07 01:42:26,575 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-07 01:42:26,882 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 115 [2019-11-07 01:42:27,154 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 115 [2019-11-07 01:42:27,518 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 115 [2019-11-07 01:42:27,621 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 115