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/Problem03_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:58:24,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:58:24,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:58:24,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:58:24,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:58:24,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:58:24,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:58:24,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:58:24,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:58:24,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:58:24,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:58:24,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:58:24,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:58:24,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:58:24,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:58:24,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:58:24,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:58:24,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:58:24,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:58:24,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:58:24,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:58:25,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:58:25,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:58:25,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:58:25,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:58:25,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:58:25,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:58:25,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:58:25,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:58:25,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:58:25,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:58:25,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:58:25,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:58:25,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:58:25,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:58:25,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:58:25,025 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 [2019-10-14 23:58:25,046 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:58:25,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:58:25,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:58:25,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:58:25,051 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:58:25,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:58:25,052 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:58:25,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:58:25,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:58:25,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:58:25,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:58:25,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:58:25,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:58:25,054 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:58:25,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:58:25,054 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:58:25,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:58:25,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:58:25,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:58:25,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:58:25,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:58:25,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:58:25,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:58:25,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:58:25,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:58:25,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:58:25,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:58:25,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:58:25,057 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 [2019-10-14 23:58:25,395 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:58:25,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:58:25,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:58:25,416 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:58:25,416 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:58:25,417 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2019-10-14 23:58:25,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e75096ca2/92521293b72d47b3b1311b7eaec82aeb/FLAG94ff4d0fb [2019-10-14 23:58:26,151 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:58:26,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2019-10-14 23:58:26,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e75096ca2/92521293b72d47b3b1311b7eaec82aeb/FLAG94ff4d0fb [2019-10-14 23:58:26,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e75096ca2/92521293b72d47b3b1311b7eaec82aeb [2019-10-14 23:58:26,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:58:26,338 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:58:26,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:58:26,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:58:26,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:58:26,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:58:26" (1/1) ... [2019-10-14 23:58:26,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@430ffa35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:26, skipping insertion in model container [2019-10-14 23:58:26,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:58:26" (1/1) ... [2019-10-14 23:58:26,354 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:58:26,430 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:58:27,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:58:27,257 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:58:27,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:58:27,700 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:58:27,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:27 WrapperNode [2019-10-14 23:58:27,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:58:27,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:58:27,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:58:27,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:58:27,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:27" (1/1) ... [2019-10-14 23:58:27,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:27" (1/1) ... [2019-10-14 23:58:27,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:27" (1/1) ... [2019-10-14 23:58:27,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:27" (1/1) ... [2019-10-14 23:58:27,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:27" (1/1) ... [2019-10-14 23:58:27,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:27" (1/1) ... [2019-10-14 23:58:27,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:27" (1/1) ... [2019-10-14 23:58:27,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:58:27,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:58:27,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:58:27,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:58:27,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:27" (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 [2019-10-14 23:58:27,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:58:27,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:58:27,980 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:58:27,980 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:58:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:58:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:58:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:58:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:58:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:58:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:58:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:58:30,252 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:58:30,253 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:58:30,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:58:30 BoogieIcfgContainer [2019-10-14 23:58:30,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:58:30,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:58:30,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:58:30,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:58:30,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:58:26" (1/3) ... [2019-10-14 23:58:30,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33533193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:58:30, skipping insertion in model container [2019-10-14 23:58:30,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:27" (2/3) ... [2019-10-14 23:58:30,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33533193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:58:30, skipping insertion in model container [2019-10-14 23:58:30,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:58:30" (3/3) ... [2019-10-14 23:58:30,263 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label24.c [2019-10-14 23:58:30,276 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:58:30,287 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:58:30,300 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:58:30,338 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:58:30,339 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:58:30,339 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:58:30,339 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:58:30,339 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:58:30,339 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:58:30,340 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:58:30,340 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:58:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-10-14 23:58:30,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-10-14 23:58:30,413 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:58:30,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:58:30,420 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:58:30,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:58:30,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1879577704, now seen corresponding path program 1 times [2019-10-14 23:58:30,440 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:58:30,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866392310] [2019-10-14 23:58:30,441 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:30,441 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:30,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:58:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:58:31,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:58:31,302 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866392310] [2019-10-14 23:58:31,303 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:58:31,303 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:58:31,304 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238593455] [2019-10-14 23:58:31,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:58:31,312 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:58:31,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:58:31,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:58:31,329 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 3 states. [2019-10-14 23:58:32,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:58:32,764 INFO L93 Difference]: Finished difference Result 841 states and 1486 transitions. [2019-10-14 23:58:32,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:58:32,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2019-10-14 23:58:32,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:58:32,786 INFO L225 Difference]: With dead ends: 841 [2019-10-14 23:58:32,787 INFO L226 Difference]: Without dead ends: 468 [2019-10-14 23:58:32,795 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 [2019-10-14 23:58:32,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2019-10-14 23:58:32,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 463. [2019-10-14 23:58:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2019-10-14 23:58:32,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 714 transitions. [2019-10-14 23:58:32,885 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 714 transitions. Word has length 197 [2019-10-14 23:58:32,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:58:32,886 INFO L462 AbstractCegarLoop]: Abstraction has 463 states and 714 transitions. [2019-10-14 23:58:32,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:58:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 714 transitions. [2019-10-14 23:58:32,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-14 23:58:32,892 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:58:32,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:58:32,893 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:58:32,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:58:32,894 INFO L82 PathProgramCache]: Analyzing trace with hash 380333484, now seen corresponding path program 1 times [2019-10-14 23:58:32,894 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:58:32,894 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393922026] [2019-10-14 23:58:32,895 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:32,895 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:32,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:58:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:58:33,289 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:58:33,290 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393922026] [2019-10-14 23:58:33,290 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:58:33,290 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:58:33,290 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104924598] [2019-10-14 23:58:33,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:58:33,295 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:58:33,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:58:33,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:58:33,295 INFO L87 Difference]: Start difference. First operand 463 states and 714 transitions. Second operand 3 states. [2019-10-14 23:58:34,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:58:34,633 INFO L93 Difference]: Finished difference Result 1347 states and 2099 transitions. [2019-10-14 23:58:34,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:58:34,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2019-10-14 23:58:34,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:58:34,645 INFO L225 Difference]: With dead ends: 1347 [2019-10-14 23:58:34,645 INFO L226 Difference]: Without dead ends: 890 [2019-10-14 23:58:34,648 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 [2019-10-14 23:58:34,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2019-10-14 23:58:34,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 889. [2019-10-14 23:58:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2019-10-14 23:58:34,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1282 transitions. [2019-10-14 23:58:34,696 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1282 transitions. Word has length 209 [2019-10-14 23:58:34,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:58:34,696 INFO L462 AbstractCegarLoop]: Abstraction has 889 states and 1282 transitions. [2019-10-14 23:58:34,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:58:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1282 transitions. [2019-10-14 23:58:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-14 23:58:34,701 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:58:34,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:58:34,702 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:58:34,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:58:34,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1077912688, now seen corresponding path program 1 times [2019-10-14 23:58:34,703 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:58:34,703 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957557075] [2019-10-14 23:58:34,703 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:34,704 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:34,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:58:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:58:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:58:34,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957557075] [2019-10-14 23:58:34,975 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:58:34,975 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:58:34,976 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273867936] [2019-10-14 23:58:34,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:58:34,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:58:34,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:58:34,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:58:34,978 INFO L87 Difference]: Start difference. First operand 889 states and 1282 transitions. Second operand 3 states. [2019-10-14 23:58:36,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:58:36,288 INFO L93 Difference]: Finished difference Result 2618 states and 3837 transitions. [2019-10-14 23:58:36,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:58:36,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2019-10-14 23:58:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:58:36,300 INFO L225 Difference]: With dead ends: 2618 [2019-10-14 23:58:36,301 INFO L226 Difference]: Without dead ends: 1735 [2019-10-14 23:58:36,304 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 [2019-10-14 23:58:36,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2019-10-14 23:58:36,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1718. [2019-10-14 23:58:36,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1718 states. [2019-10-14 23:58:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2466 transitions. [2019-10-14 23:58:36,363 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2466 transitions. Word has length 211 [2019-10-14 23:58:36,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:58:36,364 INFO L462 AbstractCegarLoop]: Abstraction has 1718 states and 2466 transitions. [2019-10-14 23:58:36,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:58:36,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2466 transitions. [2019-10-14 23:58:36,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-14 23:58:36,372 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:58:36,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:58:36,373 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:58:36,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:58:36,374 INFO L82 PathProgramCache]: Analyzing trace with hash -2116089621, now seen corresponding path program 1 times [2019-10-14 23:58:36,374 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:58:36,374 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740941893] [2019-10-14 23:58:36,374 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:36,375 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:36,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:58:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:58:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:58:36,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740941893] [2019-10-14 23:58:36,526 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:58:36,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:58:36,526 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316431072] [2019-10-14 23:58:36,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:58:36,527 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:58:36,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:58:36,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:58:36,528 INFO L87 Difference]: Start difference. First operand 1718 states and 2466 transitions. Second operand 6 states. [2019-10-14 23:58:38,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:58:38,407 INFO L93 Difference]: Finished difference Result 5243 states and 8309 transitions. [2019-10-14 23:58:38,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:58:38,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2019-10-14 23:58:38,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:58:38,437 INFO L225 Difference]: With dead ends: 5243 [2019-10-14 23:58:38,437 INFO L226 Difference]: Without dead ends: 3531 [2019-10-14 23:58:38,444 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 [2019-10-14 23:58:38,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2019-10-14 23:58:38,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 3443. [2019-10-14 23:58:38,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3443 states. [2019-10-14 23:58:38,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 5067 transitions. [2019-10-14 23:58:38,573 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 5067 transitions. Word has length 214 [2019-10-14 23:58:38,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:58:38,574 INFO L462 AbstractCegarLoop]: Abstraction has 3443 states and 5067 transitions. [2019-10-14 23:58:38,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:58:38,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 5067 transitions. [2019-10-14 23:58:38,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-14 23:58:38,586 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:58:38,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:58:38,587 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:58:38,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:58:38,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1988786189, now seen corresponding path program 1 times [2019-10-14 23:58:38,588 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:58:38,588 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55795889] [2019-10-14 23:58:38,588 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:38,588 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:58:38,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:58:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:58:38,737 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:58:38,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55795889] [2019-10-14 23:58:38,739 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605754504] [2019-10-14 23:58:38,739 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 [2019-10-14 23:58:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:58:39,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:58:39,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:58:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:58:39,238 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:58:39,357 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:58:39,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [192258765] [2019-10-14 23:58:39,364 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 229 [2019-10-14 23:58:39,436 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:58:39,437 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)