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 0.1.24-13a467a-m [2019-10-15 01:43:34,210 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-15 01:43:34,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:43:34,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:43:34,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:43:34,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:43:34,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:43:34,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:43:34,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:43:34,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:43:34,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:43:34,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:43:34,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:43:34,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:43:34,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:43:34,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:43:34,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:43:34,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:43:34,264 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:43:34,278 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:43:34,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:43:34,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:43:34,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:43:34,280 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:43:34,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:43:34,280 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:43:34,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:43:34,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:43:34,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:43:34,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:43:34,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:43:34,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:43:34,282 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:43:34,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:43:34,282 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:43:34,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:43:34,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:43:34,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:43:34,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:43:34,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:43:34,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:43:34,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:43:34,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:43:34,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:43:34,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:43:34,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:43:34,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:43:34,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 01:43:34,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:43:34,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:43:34,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:43:34,582 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:43:34,582 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:43:34,583 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2019-10-15 01:43:34,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70fb0240f/b86a95bbc27e465992497f12e017e17e/FLAG47df080fb [2019-10-15 01:43:35,296 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:43:35,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2019-10-15 01:43:35,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70fb0240f/b86a95bbc27e465992497f12e017e17e/FLAG47df080fb [2019-10-15 01:43:35,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70fb0240f/b86a95bbc27e465992497f12e017e17e [2019-10-15 01:43:35,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:43:35,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:43:35,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:43:35,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:43:35,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:43:35,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:43:35" (1/1) ... [2019-10-15 01:43:35,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5611840f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:35, skipping insertion in model container [2019-10-15 01:43:35,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:43:35" (1/1) ... [2019-10-15 01:43:35,454 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:43:35,541 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:43:36,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:43:36,393 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:43:36,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:43:36,668 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:43:36,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:36 WrapperNode [2019-10-15 01:43:36,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:43:36,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:43:36,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:43:36,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:43:36,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:36" (1/1) ... [2019-10-15 01:43:36,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:36" (1/1) ... [2019-10-15 01:43:36,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:36" (1/1) ... [2019-10-15 01:43:36,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:36" (1/1) ... [2019-10-15 01:43:36,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:36" (1/1) ... [2019-10-15 01:43:36,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:36" (1/1) ... [2019-10-15 01:43:36,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:36" (1/1) ... [2019-10-15 01:43:36,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:43:36,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:43:36,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:43:36,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:43:36,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:43:36,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:43:36,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:43:36,913 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:43:36,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:43:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:43:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:43:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:43:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:43:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:43:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:43:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:43:40,079 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:43:40,079 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:43:40,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:43:40 BoogieIcfgContainer [2019-10-15 01:43:40,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:43:40,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:43:40,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:43:40,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:43:40,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:43:35" (1/3) ... [2019-10-15 01:43:40,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10dd858a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:43:40, skipping insertion in model container [2019-10-15 01:43:40,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:36" (2/3) ... [2019-10-15 01:43:40,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10dd858a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:43:40, skipping insertion in model container [2019-10-15 01:43:40,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:43:40" (3/3) ... [2019-10-15 01:43:40,104 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label24.c [2019-10-15 01:43:40,121 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:43:40,132 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:43:40,146 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:43:40,188 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:43:40,188 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:43:40,188 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:43:40,188 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:43:40,189 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:43:40,189 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:43:40,247 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:43:40,247 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:43:40,288 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-15 01:43:40,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:43:40,311 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:40,312 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:43:40,314 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:40,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:40,321 INFO L82 PathProgramCache]: Analyzing trace with hash 136475942, now seen corresponding path program 1 times [2019-10-15 01:43:40,331 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:40,331 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440687897] [2019-10-15 01:43:40,332 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:40,332 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:40,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:41,095 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440687897] [2019-10-15 01:43:41,095 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:43:41,096 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:43:41,096 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679238171] [2019-10-15 01:43:41,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:43:41,101 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:41,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:43:41,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:41,119 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2019-10-15 01:43:42,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:42,280 INFO L93 Difference]: Finished difference Result 462 states and 886 transitions. [2019-10-15 01:43:42,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:43:42,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-15 01:43:42,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:42,302 INFO L225 Difference]: With dead ends: 462 [2019-10-15 01:43:42,303 INFO L226 Difference]: Without dead ends: 301 [2019-10-15 01:43:42,310 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:42,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-10-15 01:43:42,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2019-10-15 01:43:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-15 01:43:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 535 transitions. [2019-10-15 01:43:42,385 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 535 transitions. Word has length 149 [2019-10-15 01:43:42,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:42,387 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 535 transitions. [2019-10-15 01:43:42,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:43:42,387 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 535 transitions. [2019-10-15 01:43:42,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:43:42,392 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:42,393 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:43:42,393 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:42,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:42,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1532425966, now seen corresponding path program 1 times [2019-10-15 01:43:42,394 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:42,394 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311559026] [2019-10-15 01:43:42,394 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:42,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:42,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:42,705 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311559026] [2019-10-15 01:43:42,705 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:43:42,705 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:43:42,706 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378645150] [2019-10-15 01:43:42,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:43:42,709 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:42,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:43:42,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:42,709 INFO L87 Difference]: Start difference. First operand 301 states and 535 transitions. Second operand 3 states. [2019-10-15 01:43:43,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:43,774 INFO L93 Difference]: Finished difference Result 891 states and 1606 transitions. [2019-10-15 01:43:43,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:43:43,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-15 01:43:43,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:43,784 INFO L225 Difference]: With dead ends: 891 [2019-10-15 01:43:43,784 INFO L226 Difference]: Without dead ends: 595 [2019-10-15 01:43:43,787 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:43,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-15 01:43:43,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-10-15 01:43:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-10-15 01:43:43,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 970 transitions. [2019-10-15 01:43:43,838 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 970 transitions. Word has length 161 [2019-10-15 01:43:43,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:43,838 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 970 transitions. [2019-10-15 01:43:43,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:43:43,839 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 970 transitions. [2019-10-15 01:43:43,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-15 01:43:43,847 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:43,847 INFO L380 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] [2019-10-15 01:43:43,848 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:43,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:43,848 INFO L82 PathProgramCache]: Analyzing trace with hash -478372114, now seen corresponding path program 1 times [2019-10-15 01:43:43,849 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:43,849 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187119124] [2019-10-15 01:43:43,849 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:43,850 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:43,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:44,042 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187119124] [2019-10-15 01:43:44,043 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:43:44,043 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:43:44,044 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336965218] [2019-10-15 01:43:44,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:43:44,046 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:44,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:43:44,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:44,050 INFO L87 Difference]: Start difference. First operand 595 states and 970 transitions. Second operand 3 states. [2019-10-15 01:43:45,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:45,040 INFO L93 Difference]: Finished difference Result 1773 states and 2941 transitions. [2019-10-15 01:43:45,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:43:45,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2019-10-15 01:43:45,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:45,048 INFO L225 Difference]: With dead ends: 1773 [2019-10-15 01:43:45,049 INFO L226 Difference]: Without dead ends: 1183 [2019-10-15 01:43:45,053 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:45,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2019-10-15 01:43:45,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2019-10-15 01:43:45,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2019-10-15 01:43:45,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1913 transitions. [2019-10-15 01:43:45,108 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1913 transitions. Word has length 163 [2019-10-15 01:43:45,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:45,109 INFO L462 AbstractCegarLoop]: Abstraction has 1183 states and 1913 transitions. [2019-10-15 01:43:45,109 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:43:45,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1913 transitions. [2019-10-15 01:43:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 01:43:45,115 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:45,115 INFO L380 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] [2019-10-15 01:43:45,115 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:45,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:45,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1566269997, now seen corresponding path program 1 times [2019-10-15 01:43:45,116 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:45,116 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714302555] [2019-10-15 01:43:45,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:45,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:45,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:45,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714302555] [2019-10-15 01:43:45,246 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:43:45,246 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:43:45,246 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387440988] [2019-10-15 01:43:45,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:43:45,247 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:45,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:43:45,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:43:45,248 INFO L87 Difference]: Start difference. First operand 1183 states and 1913 transitions. Second operand 6 states. [2019-10-15 01:43:46,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:46,920 INFO L93 Difference]: Finished difference Result 3663 states and 6645 transitions. [2019-10-15 01:43:46,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:43:46,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2019-10-15 01:43:46,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:46,951 INFO L225 Difference]: With dead ends: 3663 [2019-10-15 01:43:46,952 INFO L226 Difference]: Without dead ends: 2485 [2019-10-15 01:43:46,956 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:43:46,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2019-10-15 01:43:47,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2403. [2019-10-15 01:43:47,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2019-10-15 01:43:47,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3970 transitions. [2019-10-15 01:43:47,117 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3970 transitions. Word has length 166 [2019-10-15 01:43:47,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:47,117 INFO L462 AbstractCegarLoop]: Abstraction has 2403 states and 3970 transitions. [2019-10-15 01:43:47,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:43:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3970 transitions. [2019-10-15 01:43:47,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-15 01:43:47,129 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:47,129 INFO L380 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] [2019-10-15 01:43:47,130 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:47,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:47,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1349583205, now seen corresponding path program 1 times [2019-10-15 01:43:47,131 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:47,132 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267751150] [2019-10-15 01:43:47,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:47,133 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:47,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:47,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267751150] [2019-10-15 01:43:47,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744325364] [2019-10-15 01:43:47,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:43:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:47,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:43:47,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:43:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:47,612 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:43:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:47,717 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [951177582] [2019-10-15 01:43:47,790 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-10-15 01:43:47,790 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:43:47,800 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:43:47,812 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:43:47,813 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:43:48,251 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-15 01:43:48,401 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-15 01:43:48,527 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-15 01:43:48,713 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-15 01:43:48,841 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-15 01:43:49,311 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 206 for LOIs [2019-10-15 01:43:49,639 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-10-15 01:43:49,918 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-10-15 01:43:50,219 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-15 01:43:50,503 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2019-10-15 01:43:52,434 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2019-10-15 01:43:53,137 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:43:54,073 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:43:54,187 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2019-10-15 01:43:54,320 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2019-10-15 01:43:54,440 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2019-10-15 01:43:54,647 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 366 [2019-10-15 01:43:54,749 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 366 [2019-10-15 01:43:54,957 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 366 [2019-10-15 01:43:55,092 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2019-10-15 01:43:55,311 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2019-10-15 01:43:55,757 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2019-10-15 01:43:56,314 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:43:57,129 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:43:57,486 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 366 [2019-10-15 01:43:57,599 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 366 [2019-10-15 01:43:57,701 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 366 [2019-10-15 01:43:57,936 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 367 [2019-10-15 01:43:58,639 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-10-15 01:43:58,830 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:43:59,699 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 366 [2019-10-15 01:43:59,802 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2019-10-15 01:43:59,948 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 366 [2019-10-15 01:44:00,671 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2019-10-15 01:44:01,025 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-10-15 01:44:01,126 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-10-15 01:44:01,236 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:44:02,164 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 366 [2019-10-15 01:44:02,274 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2019-10-15 01:44:02,447 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 366 [2019-10-15 01:44:02,877 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2019-10-15 01:44:03,641 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2019-10-15 01:44:04,034 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-10-15 01:44:04,178 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:44:04,179 INFO L199 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 166 for LOIs [2019-10-15 01:44:04,958 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 111 [2019-10-15 01:44:05,385 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 113 [2019-10-15 01:44:05,913 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 115 [2019-10-15 01:44:06,314 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 115 [2019-10-15 01:44:06,733 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 115 [2019-10-15 01:44:06,886 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-15 01:44:07,023 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-10-15 01:44:07,829 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 115 [2019-10-15 01:44:08,025 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2019-10-15 01:44:08,376 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 115 [2019-10-15 01:44:08,849 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 115