/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_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:41:33,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:41:33,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:41:33,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:41:33,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:41:33,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:41:33,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:41:33,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:41:33,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:41:33,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:41:33,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:41:33,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:41:33,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:41:33,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:41:33,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:41:33,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:41:33,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:41:33,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:41:33,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:41:33,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:41:33,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:41:33,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:41:33,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:41:33,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:41:33,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 01:41:33,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 01:41:33,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 01:41:33,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 01:41:33,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 01:41:33,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 01:41:33,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 01:41:33,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 01:41:33,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 01:41:33,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 01:41:33,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 01:41:33,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 01:41:33,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 01:41:33,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 01:41:33,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:41:33,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:41:33,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:41:33,278 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 01:41:33,291 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:41:33,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:41:33,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:41:33,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:41:33,293 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:41:33,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:41:33,293 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:41:33,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:41:33,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:41:33,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:41:33,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:41:33,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:41:33,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:41:33,295 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:41:33,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:41:33,295 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:41:33,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:41:33,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:41:33,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:41:33,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:41:33,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:41:33,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:41:33,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:41:33,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:41:33,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:41:33,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:41:33,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:41:33,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:41:33,298 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 01:41:33,574 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:41:33,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:41:33,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:41:33,593 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:41:33,594 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:41:33,594 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label16.c [2019-11-07 01:41:33,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b554a8ab/a8e8863eab2747f1a3a0c1ace43ab04c/FLAG4f907bf69 [2019-11-07 01:41:34,281 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:41:34,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label16.c [2019-11-07 01:41:34,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b554a8ab/a8e8863eab2747f1a3a0c1ace43ab04c/FLAG4f907bf69 [2019-11-07 01:41:34,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b554a8ab/a8e8863eab2747f1a3a0c1ace43ab04c [2019-11-07 01:41:34,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:41:34,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:41:34,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:41:34,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:41:34,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:41:34,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:34" (1/1) ... [2019-11-07 01:41:34,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f99a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:34, skipping insertion in model container [2019-11-07 01:41:34,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:34" (1/1) ... [2019-11-07 01:41:34,550 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:41:34,625 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:41:35,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:41:35,443 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:41:35,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:41:35,854 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:41:35,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:35 WrapperNode [2019-11-07 01:41:35,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:41:35,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:41:35,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:41:35,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:41:35,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:35" (1/1) ... [2019-11-07 01:41:35,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:35" (1/1) ... [2019-11-07 01:41:35,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:35" (1/1) ... [2019-11-07 01:41:35,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:35" (1/1) ... [2019-11-07 01:41:36,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:35" (1/1) ... [2019-11-07 01:41:36,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:35" (1/1) ... [2019-11-07 01:41:36,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:35" (1/1) ... [2019-11-07 01:41:36,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:41:36,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:41:36,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:41:36,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:41:36,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:35" (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 01:41:36,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:41:36,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:41:36,143 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-07 01:41:36,143 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:41:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-07 01:41:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:41:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:41:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 01:41:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:41:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:41:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:41:39,016 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:41:39,016 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 01:41:39,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:41:39 BoogieIcfgContainer [2019-11-07 01:41:39,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:41:39,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:41:39,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:41:39,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:41:39,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:41:34" (1/3) ... [2019-11-07 01:41:39,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a211c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:41:39, skipping insertion in model container [2019-11-07 01:41:39,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:35" (2/3) ... [2019-11-07 01:41:39,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a211c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:41:39, skipping insertion in model container [2019-11-07 01:41:39,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:41:39" (3/3) ... [2019-11-07 01:41:39,036 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label16.c [2019-11-07 01:41:39,051 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:41:39,059 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:41:39,071 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:41:39,106 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:41:39,107 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:41:39,107 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:41:39,108 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:41:39,108 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:41:39,108 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:41:39,108 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:41:39,108 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:41:39,139 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-11-07 01:41:39,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 01:41:39,161 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:41:39,162 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 01:41:39,165 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:41:39,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:41:39,171 INFO L82 PathProgramCache]: Analyzing trace with hash 136469286, now seen corresponding path program 1 times [2019-11-07 01:41:39,181 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:41:39,181 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448920034] [2019-11-07 01:41:39,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:41:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:41:39,892 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 01:41:39,892 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448920034] [2019-11-07 01:41:39,894 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:41:39,894 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:41:39,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067174565] [2019-11-07 01:41:39,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:41:39,904 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:41:39,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:41:39,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:41:39,920 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2019-11-07 01:41:41,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:41:41,080 INFO L93 Difference]: Finished difference Result 462 states and 886 transitions. [2019-11-07 01:41:41,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:41:41,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-11-07 01:41:41,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:41:41,100 INFO L225 Difference]: With dead ends: 462 [2019-11-07 01:41:41,100 INFO L226 Difference]: Without dead ends: 301 [2019-11-07 01:41:41,105 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 01:41:41,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-11-07 01:41:41,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2019-11-07 01:41:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-11-07 01:41:41,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 529 transitions. [2019-11-07 01:41:41,182 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 529 transitions. Word has length 149 [2019-11-07 01:41:41,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:41:41,184 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 529 transitions. [2019-11-07 01:41:41,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:41:41,184 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 529 transitions. [2019-11-07 01:41:41,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-11-07 01:41:41,193 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:41:41,193 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 01:41:41,194 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:41:41,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:41:41,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1532432622, now seen corresponding path program 1 times [2019-11-07 01:41:41,194 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:41:41,195 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138487328] [2019-11-07 01:41:41,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:41:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:41:41,465 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 01:41:41,466 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138487328] [2019-11-07 01:41:41,466 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:41:41,466 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:41:41,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143681442] [2019-11-07 01:41:41,468 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:41:41,468 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:41:41,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:41:41,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:41:41,469 INFO L87 Difference]: Start difference. First operand 301 states and 529 transitions. Second operand 3 states. [2019-11-07 01:41:42,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:41:42,449 INFO L93 Difference]: Finished difference Result 891 states and 1588 transitions. [2019-11-07 01:41:42,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:41:42,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-11-07 01:41:42,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:41:42,477 INFO L225 Difference]: With dead ends: 891 [2019-11-07 01:41:42,477 INFO L226 Difference]: Without dead ends: 595 [2019-11-07 01:41:42,481 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 01:41:42,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-11-07 01:41:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-11-07 01:41:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-11-07 01:41:42,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 1019 transitions. [2019-11-07 01:41:42,572 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 1019 transitions. Word has length 161 [2019-11-07 01:41:42,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:41:42,573 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 1019 transitions. [2019-11-07 01:41:42,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:41:42,574 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 1019 transitions. [2019-11-07 01:41:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-07 01:41:42,579 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:41:42,580 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 01:41:42,580 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:41:42,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:41:42,580 INFO L82 PathProgramCache]: Analyzing trace with hash -924627422, now seen corresponding path program 1 times [2019-11-07 01:41:42,581 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:41:42,581 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47128632] [2019-11-07 01:41:42,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:41:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:41:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:41:42,701 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47128632] [2019-11-07 01:41:42,701 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588322083] [2019-11-07 01:41:42,701 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 01:41:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:41:42,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:41:42,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:41:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:41:43,135 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:41:43,244 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:41:43,245 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1253962672] [2019-11-07 01:41:43,280 INFO L159 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-11-07 01:41:43,280 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:41:43,287 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:41:43,294 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:41:43,294 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:41:43,647 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 208 for LOIs [2019-11-07 01:41:44,616 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 256 [2019-11-07 01:41:44,912 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2019-11-07 01:41:45,437 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 364 [2019-11-07 01:41:45,602 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2019-11-07 01:41:45,737 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2019-11-07 01:41:45,860 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-11-07 01:41:46,048 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 364 [2019-11-07 01:41:46,364 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-11-07 01:41:46,981 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-11-07 01:41:47,215 INFO L197 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 168 for LOIs [2019-11-07 01:41:48,220 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 110 [2019-11-07 01:41:48,747 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 110 [2019-11-07 01:41:50,993 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 110 [2019-11-07 01:42:04,846 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 110 [2019-11-07 01:42:05,075 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 110 [2019-11-07 01:42:05,903 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 110 [2019-11-07 01:42:06,001 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 23 [2019-11-07 01:42:06,113 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 10308 conjuctions. This might take some time... [2019-11-07 01:42:06,479 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 23 [2019-11-07 01:42:06,543 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 10308 conjuctions. This might take some time... [2019-11-07 01:42:07,134 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 23 [2019-11-07 01:42:07,213 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 10308 conjuctions. This might take some time...