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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 20:06:16,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 20:06:16,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 20:06:16,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 20:06:16,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 20:06:16,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 20:06:16,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 20:06:16,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 20:06:16,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 20:06:16,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 20:06:16,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 20:06:16,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 20:06:16,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 20:06:16,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 20:06:16,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 20:06:16,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 20:06:16,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 20:06:16,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 20:06:16,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 20:06:16,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 20:06:16,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 20:06:16,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 20:06:16,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 20:06:16,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 20:06:16,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 20:06:16,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 20:06:16,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 20:06:16,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 20:06:16,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 20:06:16,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 20:06:16,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 20:06:16,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 20:06:16,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 20:06:16,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 20:06:16,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 20:06:16,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 20:06:16,329 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 [2019-10-13 20:06:16,349 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 20:06:16,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 20:06:16,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 20:06:16,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 20:06:16,352 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 20:06:16,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 20:06:16,352 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 20:06:16,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 20:06:16,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 20:06:16,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 20:06:16,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 20:06:16,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 20:06:16,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 20:06:16,355 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 20:06:16,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 20:06:16,356 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 20:06:16,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 20:06:16,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 20:06:16,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 20:06:16,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 20:06:16,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 20:06:16,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:06:16,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 20:06:16,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 20:06:16,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 20:06:16,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 20:06:16,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 20:06:16,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 20:06:16,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 20:06:16,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 20:06:16,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 20:06:16,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 20:06:16,651 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 20:06:16,651 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 20:06:16,652 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label20.c [2019-10-13 20:06:16,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b1c0cec6/4a9be21b5e3f4fa1abe083974d752a90/FLAGea7145961 [2019-10-13 20:06:17,552 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 20:06:17,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label20.c [2019-10-13 20:06:17,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b1c0cec6/4a9be21b5e3f4fa1abe083974d752a90/FLAGea7145961 [2019-10-13 20:06:18,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b1c0cec6/4a9be21b5e3f4fa1abe083974d752a90 [2019-10-13 20:06:18,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 20:06:18,088 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 20:06:18,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 20:06:18,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 20:06:18,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 20:06:18,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:06:18" (1/1) ... [2019-10-13 20:06:18,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6bd7bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:18, skipping insertion in model container [2019-10-13 20:06:18,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:06:18" (1/1) ... [2019-10-13 20:06:18,105 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 20:06:18,302 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 20:06:19,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:06:19,919 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 20:06:20,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:06:20,592 INFO L192 MainTranslator]: Completed translation [2019-10-13 20:06:20,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:20 WrapperNode [2019-10-13 20:06:20,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 20:06:20,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 20:06:20,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 20:06:20,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 20:06:20,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:20" (1/1) ... [2019-10-13 20:06:20,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:20" (1/1) ... [2019-10-13 20:06:20,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:20" (1/1) ... [2019-10-13 20:06:20,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:20" (1/1) ... [2019-10-13 20:06:20,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:20" (1/1) ... [2019-10-13 20:06:20,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:20" (1/1) ... [2019-10-13 20:06:20,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:20" (1/1) ... [2019-10-13 20:06:20,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 20:06:20,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 20:06:20,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 20:06:20,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 20:06:20,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:20" (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 [2019-10-13 20:06:20,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 20:06:20,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 20:06:20,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 20:06:20,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 20:06:20,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 20:06:20,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-13 20:06:20,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 20:06:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 20:06:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 20:06:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 20:06:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-13 20:06:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 20:06:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 20:06:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 20:06:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 20:06:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 20:06:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 20:06:27,332 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 20:06:27,332 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 20:06:27,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:06:27 BoogieIcfgContainer [2019-10-13 20:06:27,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 20:06:27,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 20:06:27,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 20:06:27,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 20:06:27,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:06:18" (1/3) ... [2019-10-13 20:06:27,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f23539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:06:27, skipping insertion in model container [2019-10-13 20:06:27,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:20" (2/3) ... [2019-10-13 20:06:27,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f23539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:06:27, skipping insertion in model container [2019-10-13 20:06:27,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:06:27" (3/3) ... [2019-10-13 20:06:27,356 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label20.c [2019-10-13 20:06:27,370 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 20:06:27,382 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 20:06:27,394 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 20:06:27,436 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 20:06:27,436 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 20:06:27,436 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 20:06:27,436 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 20:06:27,436 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 20:06:27,437 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 20:06:27,437 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 20:06:27,437 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 20:06:27,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-10-13 20:06:27,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 20:06:27,483 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:27,484 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] [2019-10-13 20:06:27,487 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:27,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:27,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1527050992, now seen corresponding path program 1 times [2019-10-13 20:06:27,503 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:27,503 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709292702] [2019-10-13 20:06:27,503 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:27,504 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:27,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:27,857 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709292702] [2019-10-13 20:06:27,857 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:27,858 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 20:06:27,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126014848] [2019-10-13 20:06:27,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:06:27,864 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:27,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:06:27,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:06:27,882 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2019-10-13 20:06:37,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:37,606 INFO L93 Difference]: Finished difference Result 3964 states and 7388 transitions. [2019-10-13 20:06:37,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 20:06:37,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2019-10-13 20:06:37,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:37,653 INFO L225 Difference]: With dead ends: 3964 [2019-10-13 20:06:37,653 INFO L226 Difference]: Without dead ends: 2758 [2019-10-13 20:06:37,669 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:06:37,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2019-10-13 20:06:37,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 1919. [2019-10-13 20:06:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1919 states. [2019-10-13 20:06:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 3313 transitions. [2019-10-13 20:06:37,844 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 3313 transitions. Word has length 61 [2019-10-13 20:06:37,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:37,845 INFO L462 AbstractCegarLoop]: Abstraction has 1919 states and 3313 transitions. [2019-10-13 20:06:37,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:06:37,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 3313 transitions. [2019-10-13 20:06:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 20:06:37,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:37,862 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:06:37,862 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:37,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:37,863 INFO L82 PathProgramCache]: Analyzing trace with hash 430477289, now seen corresponding path program 1 times [2019-10-13 20:06:37,864 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:37,864 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053946314] [2019-10-13 20:06:37,864 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:37,864 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:37,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:38,155 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053946314] [2019-10-13 20:06:38,155 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:38,156 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 20:06:38,156 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597846674] [2019-10-13 20:06:38,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:06:38,158 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:38,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:06:38,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:06:38,159 INFO L87 Difference]: Start difference. First operand 1919 states and 3313 transitions. Second operand 5 states. [2019-10-13 20:06:45,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:45,952 INFO L93 Difference]: Finished difference Result 5545 states and 9710 transitions. [2019-10-13 20:06:45,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 20:06:45,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2019-10-13 20:06:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:45,974 INFO L225 Difference]: With dead ends: 5545 [2019-10-13 20:06:45,974 INFO L226 Difference]: Without dead ends: 3632 [2019-10-13 20:06:45,980 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 20:06:45,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2019-10-13 20:06:46,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 3623. [2019-10-13 20:06:46,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3623 states. [2019-10-13 20:06:46,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5644 transitions. [2019-10-13 20:06:46,075 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5644 transitions. Word has length 130 [2019-10-13 20:06:46,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:46,075 INFO L462 AbstractCegarLoop]: Abstraction has 3623 states and 5644 transitions. [2019-10-13 20:06:46,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 20:06:46,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5644 transitions. [2019-10-13 20:06:46,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 20:06:46,078 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:46,078 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:06:46,078 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:46,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:46,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1084274893, now seen corresponding path program 1 times [2019-10-13 20:06:46,079 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:46,079 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286325892] [2019-10-13 20:06:46,079 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:46,080 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:46,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:46,219 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:46,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286325892] [2019-10-13 20:06:46,219 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:46,220 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 20:06:46,220 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368386081] [2019-10-13 20:06:46,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:06:46,221 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:46,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:06:46,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:06:46,222 INFO L87 Difference]: Start difference. First operand 3623 states and 5644 transitions. Second operand 5 states.