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/Problem02_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:57:31,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:57:31,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:57:31,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:57:31,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:57:31,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:57:31,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:57:31,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:57:31,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:57:31,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:57:31,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:57:31,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:57:31,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:57:31,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:57:31,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:57:31,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:57:31,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:57:31,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:57:31,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:57:31,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:57:31,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:57:31,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:57:31,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:57:31,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:57:31,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:57:31,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:57:31,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:57:31,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:57:31,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:57:31,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:57:31,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:57:31,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:57:31,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:57:31,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:57:31,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:57:31,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:57:31,061 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 23:57:31,083 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:57:31,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:57:31,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:57:31,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:57:31,086 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:57:31,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:57:31,087 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:57:31,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:57:31,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:57:31,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:57:31,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:57:31,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:57:31,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:57:31,089 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:57:31,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:57:31,090 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:57:31,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:57:31,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:57:31,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:57:31,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:57:31,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:57:31,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:57:31,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:57:31,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:57:31,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:57:31,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:57:31,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:57:31,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:57:31,092 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 23:57:31,386 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:57:31,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:57:31,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:57:31,408 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:57:31,408 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:57:31,409 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label47.c [2019-10-14 23:57:31,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc51cb97/702568ea2f4e46d9996759921a3459ed/FLAG3efcaf7ff [2019-10-14 23:57:32,030 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:57:32,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label47.c [2019-10-14 23:57:32,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc51cb97/702568ea2f4e46d9996759921a3459ed/FLAG3efcaf7ff [2019-10-14 23:57:32,314 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc51cb97/702568ea2f4e46d9996759921a3459ed [2019-10-14 23:57:32,324 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:57:32,326 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:57:32,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:57:32,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:57:32,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:57:32,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:57:32" (1/1) ... [2019-10-14 23:57:32,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c0bab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:32, skipping insertion in model container [2019-10-14 23:57:32,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:57:32" (1/1) ... [2019-10-14 23:57:32,342 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:57:32,401 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:57:32,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:57:32,929 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:57:33,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:57:33,072 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:57:33,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:33 WrapperNode [2019-10-14 23:57:33,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:57:33,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:57:33,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:57:33,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:57:33,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:33" (1/1) ... [2019-10-14 23:57:33,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:33" (1/1) ... [2019-10-14 23:57:33,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:33" (1/1) ... [2019-10-14 23:57:33,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:33" (1/1) ... [2019-10-14 23:57:33,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:33" (1/1) ... [2019-10-14 23:57:33,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:33" (1/1) ... [2019-10-14 23:57:33,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:33" (1/1) ... [2019-10-14 23:57:33,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:57:33,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:57:33,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:57:33,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:57:33,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:33" (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 23:57:33,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:57:33,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:57:33,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:57:33,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:57:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:57:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:57:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:57:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:57:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:57:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:57:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:57:34,381 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:57:34,381 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:57:34,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:57:34 BoogieIcfgContainer [2019-10-14 23:57:34,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:57:34,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:57:34,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:57:34,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:57:34,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:57:32" (1/3) ... [2019-10-14 23:57:34,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a185dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:57:34, skipping insertion in model container [2019-10-14 23:57:34,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:33" (2/3) ... [2019-10-14 23:57:34,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a185dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:57:34, skipping insertion in model container [2019-10-14 23:57:34,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:57:34" (3/3) ... [2019-10-14 23:57:34,393 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label47.c [2019-10-14 23:57:34,405 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:57:34,416 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:57:34,430 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:57:34,463 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:57:34,463 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:57:34,463 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:57:34,464 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:57:34,464 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:57:34,464 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:57:34,465 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:57:34,465 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:57:34,492 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2019-10-14 23:57:34,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-14 23:57:34,505 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:34,506 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] [2019-10-14 23:57:34,508 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:34,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:34,515 INFO L82 PathProgramCache]: Analyzing trace with hash -681714095, now seen corresponding path program 1 times [2019-10-14 23:57:34,524 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:34,524 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752111744] [2019-10-14 23:57:34,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:34,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:34,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:35,050 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 23:57:35,050 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752111744] [2019-10-14 23:57:35,052 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:57:35,053 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:57:35,054 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226232861] [2019-10-14 23:57:35,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:57:35,064 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:35,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:57:35,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:57:35,086 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 3 states. [2019-10-14 23:57:35,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:35,979 INFO L93 Difference]: Finished difference Result 624 states and 1069 transitions. [2019-10-14 23:57:35,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:57:35,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2019-10-14 23:57:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:35,997 INFO L225 Difference]: With dead ends: 624 [2019-10-14 23:57:35,997 INFO L226 Difference]: Without dead ends: 326 [2019-10-14 23:57:36,004 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 23:57:36,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2019-10-14 23:57:36,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 321. [2019-10-14 23:57:36,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2019-10-14 23:57:36,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 467 transitions. [2019-10-14 23:57:36,093 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 467 transitions. Word has length 113 [2019-10-14 23:57:36,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:36,094 INFO L462 AbstractCegarLoop]: Abstraction has 321 states and 467 transitions. [2019-10-14 23:57:36,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:57:36,094 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 467 transitions. [2019-10-14 23:57:36,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-14 23:57:36,099 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:36,099 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:57:36,099 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:36,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1310105962, now seen corresponding path program 1 times [2019-10-14 23:57:36,100 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:36,101 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325917982] [2019-10-14 23:57:36,101 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:36,101 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:36,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:36,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:36,398 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325917982] [2019-10-14 23:57:36,398 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:57:36,398 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:57:36,398 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541534190] [2019-10-14 23:57:36,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:57:36,401 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:36,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:57:36,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:57:36,401 INFO L87 Difference]: Start difference. First operand 321 states and 467 transitions. Second operand 5 states. [2019-10-14 23:57:37,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:37,031 INFO L93 Difference]: Finished difference Result 723 states and 1093 transitions. [2019-10-14 23:57:37,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:57:37,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2019-10-14 23:57:37,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:37,039 INFO L225 Difference]: With dead ends: 723 [2019-10-14 23:57:37,040 INFO L226 Difference]: Without dead ends: 321 [2019-10-14 23:57:37,042 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:57:37,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2019-10-14 23:57:37,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2019-10-14 23:57:37,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2019-10-14 23:57:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 463 transitions. [2019-10-14 23:57:37,062 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 463 transitions. Word has length 121 [2019-10-14 23:57:37,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:37,062 INFO L462 AbstractCegarLoop]: Abstraction has 321 states and 463 transitions. [2019-10-14 23:57:37,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:57:37,062 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 463 transitions. [2019-10-14 23:57:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-14 23:57:37,065 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:37,065 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:57:37,066 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:37,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:37,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2076461862, now seen corresponding path program 1 times [2019-10-14 23:57:37,066 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:37,066 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335931998] [2019-10-14 23:57:37,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:37,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:37,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:37,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335931998] [2019-10-14 23:57:37,180 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:57:37,181 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:57:37,181 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416956460] [2019-10-14 23:57:37,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:57:37,182 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:37,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:57:37,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:57:37,182 INFO L87 Difference]: Start difference. First operand 321 states and 463 transitions. Second operand 6 states. [2019-10-14 23:57:38,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:38,088 INFO L93 Difference]: Finished difference Result 979 states and 1481 transitions. [2019-10-14 23:57:38,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:57:38,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2019-10-14 23:57:38,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:38,097 INFO L225 Difference]: With dead ends: 979 [2019-10-14 23:57:38,097 INFO L226 Difference]: Without dead ends: 664 [2019-10-14 23:57:38,099 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 23:57:38,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2019-10-14 23:57:38,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 632. [2019-10-14 23:57:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 632 states. [2019-10-14 23:57:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 894 transitions. [2019-10-14 23:57:38,151 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 894 transitions. Word has length 123 [2019-10-14 23:57:38,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:38,152 INFO L462 AbstractCegarLoop]: Abstraction has 632 states and 894 transitions. [2019-10-14 23:57:38,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:57:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 894 transitions. [2019-10-14 23:57:38,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-14 23:57:38,156 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:38,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:57:38,157 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:38,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:38,157 INFO L82 PathProgramCache]: Analyzing trace with hash 313178237, now seen corresponding path program 1 times [2019-10-14 23:57:38,158 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:38,158 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481560547] [2019-10-14 23:57:38,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:38,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:38,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:38,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481560547] [2019-10-14 23:57:38,454 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:57:38,454 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:57:38,455 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056111514] [2019-10-14 23:57:38,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:57:38,455 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:38,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:57:38,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:57:38,456 INFO L87 Difference]: Start difference. First operand 632 states and 894 transitions. Second operand 5 states. [2019-10-14 23:57:39,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:39,167 INFO L93 Difference]: Finished difference Result 1342 states and 1951 transitions. [2019-10-14 23:57:39,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:57:39,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2019-10-14 23:57:39,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:39,174 INFO L225 Difference]: With dead ends: 1342 [2019-10-14 23:57:39,175 INFO L226 Difference]: Without dead ends: 632 [2019-10-14 23:57:39,176 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:57:39,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2019-10-14 23:57:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2019-10-14 23:57:39,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 632 states. [2019-10-14 23:57:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 882 transitions. [2019-10-14 23:57:39,196 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 882 transitions. Word has length 137 [2019-10-14 23:57:39,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:39,197 INFO L462 AbstractCegarLoop]: Abstraction has 632 states and 882 transitions. [2019-10-14 23:57:39,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:57:39,197 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 882 transitions. [2019-10-14 23:57:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-14 23:57:39,200 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:39,200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:57:39,200 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:39,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:39,201 INFO L82 PathProgramCache]: Analyzing trace with hash 206908097, now seen corresponding path program 1 times [2019-10-14 23:57:39,201 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:39,201 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844598037] [2019-10-14 23:57:39,201 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:39,201 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:39,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:39,398 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844598037] [2019-10-14 23:57:39,399 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:57:39,399 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:57:39,399 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116609995] [2019-10-14 23:57:39,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:57:39,400 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:39,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:57:39,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:57:39,400 INFO L87 Difference]: Start difference. First operand 632 states and 882 transitions. Second operand 5 states. [2019-10-14 23:57:40,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:40,072 INFO L93 Difference]: Finished difference Result 1344 states and 1924 transitions. [2019-10-14 23:57:40,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:57:40,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2019-10-14 23:57:40,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:40,078 INFO L225 Difference]: With dead ends: 1344 [2019-10-14 23:57:40,078 INFO L226 Difference]: Without dead ends: 632 [2019-10-14 23:57:40,080 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:57:40,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2019-10-14 23:57:40,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 630. [2019-10-14 23:57:40,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-14 23:57:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 861 transitions. [2019-10-14 23:57:40,101 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 861 transitions. Word has length 139 [2019-10-14 23:57:40,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:40,101 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 861 transitions. [2019-10-14 23:57:40,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:57:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 861 transitions. [2019-10-14 23:57:40,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-14 23:57:40,105 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:40,105 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-14 23:57:40,105 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:40,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:40,106 INFO L82 PathProgramCache]: Analyzing trace with hash -441378269, now seen corresponding path program 1 times [2019-10-14 23:57:40,106 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:40,106 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182868346] [2019-10-14 23:57:40,106 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:40,106 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:40,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:40,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182868346] [2019-10-14 23:57:40,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643271493] [2019-10-14 23:57:40,245 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 23:57:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:40,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:57:40,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:57:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:40,432 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:57:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:40,552 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [2118878264] [2019-10-14 23:57:40,560 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 147 [2019-10-14 23:57:40,618 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:57:40,619 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)