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_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:57:09,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:57:09,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:57:10,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:57:10,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:57:10,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:57:10,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:57:10,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:57:10,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:57:10,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:57:10,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:57:10,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:57:10,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:57:10,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:57:10,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:57:10,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:57:10,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:57:10,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:57:10,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:57:10,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:57:10,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:57:10,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:57:10,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:57:10,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:57:10,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:57:10,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:57:10,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:57:10,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:57:10,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:57:10,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:57:10,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:57:10,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:57:10,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:57:10,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:57:10,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:57:10,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:57:10,067 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 23:57:10,099 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:57:10,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:57:10,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:57:10,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:57:10,105 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:57:10,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:57:10,106 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:57:10,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:57:10,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:57:10,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:57:10,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:57:10,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:57:10,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:57:10,107 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:57:10,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:57:10,107 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:57:10,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:57:10,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:57:10,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:57:10,109 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:57:10,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:57:10,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:57:10,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:57:10,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:57:10,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:57:10,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:57:10,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:57:10,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:57:10,111 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 23:57:10,393 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:57:10,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:57:10,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:57:10,410 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:57:10,410 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:57:10,411 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label39.c [2019-10-14 23:57:10,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7274478f9/fde03b1a6bae418984488569b8a89a19/FLAG276a7628b [2019-10-14 23:57:11,040 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:57:11,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label39.c [2019-10-14 23:57:11,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7274478f9/fde03b1a6bae418984488569b8a89a19/FLAG276a7628b [2019-10-14 23:57:11,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7274478f9/fde03b1a6bae418984488569b8a89a19 [2019-10-14 23:57:11,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:57:11,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:57:11,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:57:11,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:57:11,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:57:11,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:57:11" (1/1) ... [2019-10-14 23:57:11,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f51de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:11, skipping insertion in model container [2019-10-14 23:57:11,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:57:11" (1/1) ... [2019-10-14 23:57:11,383 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:57:11,441 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:57:11,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:57:11,940 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:57:12,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:57:12,051 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:57:12,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:12 WrapperNode [2019-10-14 23:57:12,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:57:12,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:57:12,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:57:12,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:57:12,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:12" (1/1) ... [2019-10-14 23:57:12,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:12" (1/1) ... [2019-10-14 23:57:12,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:12" (1/1) ... [2019-10-14 23:57:12,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:12" (1/1) ... [2019-10-14 23:57:12,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:12" (1/1) ... [2019-10-14 23:57:12,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:12" (1/1) ... [2019-10-14 23:57:12,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:12" (1/1) ... [2019-10-14 23:57:12,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:57:12,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:57:12,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:57:12,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:57:12,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:12" (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 23:57:12,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:57:12,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:57:12,216 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:57:12,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:57:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:57:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:57:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:57:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:57:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:57:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:57:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:57:13,461 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:57:13,462 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:57:13,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:57:13 BoogieIcfgContainer [2019-10-14 23:57:13,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:57:13,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:57:13,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:57:13,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:57:13,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:57:11" (1/3) ... [2019-10-14 23:57:13,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d224f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:57:13, skipping insertion in model container [2019-10-14 23:57:13,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:12" (2/3) ... [2019-10-14 23:57:13,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d224f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:57:13, skipping insertion in model container [2019-10-14 23:57:13,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:57:13" (3/3) ... [2019-10-14 23:57:13,472 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label39.c [2019-10-14 23:57:13,482 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:57:13,490 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:57:13,502 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:57:13,529 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:57:13,529 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:57:13,530 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:57:13,530 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:57:13,530 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:57:13,530 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:57:13,531 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:57:13,531 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:57:13,555 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2019-10-14 23:57:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-14 23:57:13,569 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:13,570 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] [2019-10-14 23:57:13,572 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:13,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:13,578 INFO L82 PathProgramCache]: Analyzing trace with hash 640678305, now seen corresponding path program 1 times [2019-10-14 23:57:13,587 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:13,588 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363753302] [2019-10-14 23:57:13,588 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:13,589 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:13,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:14,095 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363753302] [2019-10-14 23:57:14,096 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:57:14,097 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:57:14,097 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757172151] [2019-10-14 23:57:14,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:57:14,107 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:14,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:57:14,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:57:14,125 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 3 states. [2019-10-14 23:57:15,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:15,139 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2019-10-14 23:57:15,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:57:15,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2019-10-14 23:57:15,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:15,168 INFO L225 Difference]: With dead ends: 618 [2019-10-14 23:57:15,169 INFO L226 Difference]: Without dead ends: 320 [2019-10-14 23:57:15,178 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 23:57:15,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-10-14 23:57:15,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2019-10-14 23:57:15,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-10-14 23:57:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 465 transitions. [2019-10-14 23:57:15,256 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 465 transitions. Word has length 117 [2019-10-14 23:57:15,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:15,257 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 465 transitions. [2019-10-14 23:57:15,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:57:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 465 transitions. [2019-10-14 23:57:15,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-14 23:57:15,265 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:15,265 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, 1, 1, 1, 1] [2019-10-14 23:57:15,266 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:15,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:15,266 INFO L82 PathProgramCache]: Analyzing trace with hash -758657178, now seen corresponding path program 1 times [2019-10-14 23:57:15,267 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:15,267 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106038216] [2019-10-14 23:57:15,267 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:15,267 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:15,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:15,572 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 23:57:15,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106038216] [2019-10-14 23:57:15,573 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:57:15,573 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:57:15,573 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388809562] [2019-10-14 23:57:15,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:57:15,576 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:15,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:57:15,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:57:15,576 INFO L87 Difference]: Start difference. First operand 320 states and 465 transitions. Second operand 5 states. [2019-10-14 23:57:16,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:16,422 INFO L93 Difference]: Finished difference Result 721 states and 1089 transitions. [2019-10-14 23:57:16,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:57:16,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2019-10-14 23:57:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:16,428 INFO L225 Difference]: With dead ends: 721 [2019-10-14 23:57:16,429 INFO L226 Difference]: Without dead ends: 320 [2019-10-14 23:57:16,431 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 23:57:16,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-10-14 23:57:16,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2019-10-14 23:57:16,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-10-14 23:57:16,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 461 transitions. [2019-10-14 23:57:16,457 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 461 transitions. Word has length 125 [2019-10-14 23:57:16,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:16,458 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 461 transitions. [2019-10-14 23:57:16,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:57:16,458 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 461 transitions. [2019-10-14 23:57:16,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-14 23:57:16,466 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:16,467 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] [2019-10-14 23:57:16,467 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:16,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:16,467 INFO L82 PathProgramCache]: Analyzing trace with hash 79547442, now seen corresponding path program 1 times [2019-10-14 23:57:16,468 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:16,468 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220765723] [2019-10-14 23:57:16,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:16,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:16,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:16,758 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 23:57:16,759 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220765723] [2019-10-14 23:57:16,759 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:57:16,759 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:57:16,759 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810740355] [2019-10-14 23:57:16,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:57:16,760 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:16,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:57:16,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:57:16,761 INFO L87 Difference]: Start difference. First operand 320 states and 461 transitions. Second operand 5 states. [2019-10-14 23:57:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:17,650 INFO L93 Difference]: Finished difference Result 717 states and 1075 transitions. [2019-10-14 23:57:17,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:57:17,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2019-10-14 23:57:17,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:17,657 INFO L225 Difference]: With dead ends: 717 [2019-10-14 23:57:17,657 INFO L226 Difference]: Without dead ends: 320 [2019-10-14 23:57:17,658 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:57:17,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-10-14 23:57:17,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2019-10-14 23:57:17,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-10-14 23:57:17,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 455 transitions. [2019-10-14 23:57:17,692 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 455 transitions. Word has length 131 [2019-10-14 23:57:17,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:17,693 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 455 transitions. [2019-10-14 23:57:17,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:57:17,693 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 455 transitions. [2019-10-14 23:57:17,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-14 23:57:17,696 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:17,697 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2019-10-14 23:57:17,699 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:17,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:17,700 INFO L82 PathProgramCache]: Analyzing trace with hash 505867657, now seen corresponding path program 1 times [2019-10-14 23:57:17,700 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:17,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001818768] [2019-10-14 23:57:17,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:17,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:17,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:17,815 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001818768] [2019-10-14 23:57:17,815 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:57:17,815 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:57:17,816 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791931987] [2019-10-14 23:57:17,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:57:17,817 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:17,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:57:17,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:57:17,818 INFO L87 Difference]: Start difference. First operand 320 states and 455 transitions. Second operand 6 states. [2019-10-14 23:57:18,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:18,836 INFO L93 Difference]: Finished difference Result 951 states and 1383 transitions. [2019-10-14 23:57:18,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:57:18,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2019-10-14 23:57:18,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:18,842 INFO L225 Difference]: With dead ends: 951 [2019-10-14 23:57:18,842 INFO L226 Difference]: Without dead ends: 637 [2019-10-14 23:57:18,843 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 23:57:18,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-10-14 23:57:18,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 626. [2019-10-14 23:57:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-14 23:57:18,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 870 transitions. [2019-10-14 23:57:18,870 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 870 transitions. Word has length 139 [2019-10-14 23:57:18,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:18,871 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 870 transitions. [2019-10-14 23:57:18,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:57:18,871 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 870 transitions. [2019-10-14 23:57:18,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-14 23:57:18,874 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:18,874 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, 1, 1, 1, 1] [2019-10-14 23:57:18,875 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:18,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:18,875 INFO L82 PathProgramCache]: Analyzing trace with hash -571744819, now seen corresponding path program 1 times [2019-10-14 23:57:18,876 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:18,876 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824029280] [2019-10-14 23:57:18,876 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:18,876 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:18,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:19,090 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 23:57:19,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824029280] [2019-10-14 23:57:19,091 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:57:19,091 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:57:19,091 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923773817] [2019-10-14 23:57:19,092 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:57:19,092 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:19,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:57:19,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:57:19,093 INFO L87 Difference]: Start difference. First operand 626 states and 870 transitions. Second operand 5 states. [2019-10-14 23:57:19,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:19,953 INFO L93 Difference]: Finished difference Result 1330 states and 1901 transitions. [2019-10-14 23:57:19,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:57:19,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2019-10-14 23:57:19,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:19,967 INFO L225 Difference]: With dead ends: 1330 [2019-10-14 23:57:19,968 INFO L226 Difference]: Without dead ends: 626 [2019-10-14 23:57:19,970 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 23:57:19,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-14 23:57:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-14 23:57:19,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-14 23:57:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 858 transitions. [2019-10-14 23:57:19,990 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 858 transitions. Word has length 141 [2019-10-14 23:57:19,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:19,990 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 858 transitions. [2019-10-14 23:57:19,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:57:19,990 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 858 transitions. [2019-10-14 23:57:19,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-14 23:57:19,993 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:19,993 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, 1, 1, 1, 1] [2019-10-14 23:57:19,994 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:19,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:19,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1019973137, now seen corresponding path program 1 times [2019-10-14 23:57:19,994 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:19,995 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590452676] [2019-10-14 23:57:19,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:19,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:19,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:20,167 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 23:57:20,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590452676] [2019-10-14 23:57:20,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:57:20,168 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:57:20,168 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912974120] [2019-10-14 23:57:20,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:57:20,169 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:20,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:57:20,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:57:20,170 INFO L87 Difference]: Start difference. First operand 626 states and 858 transitions. Second operand 5 states. [2019-10-14 23:57:21,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:21,022 INFO L93 Difference]: Finished difference Result 1332 states and 1876 transitions. [2019-10-14 23:57:21,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:57:21,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-10-14 23:57:21,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:21,032 INFO L225 Difference]: With dead ends: 1332 [2019-10-14 23:57:21,032 INFO L226 Difference]: Without dead ends: 626 [2019-10-14 23:57:21,034 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 23:57:21,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-14 23:57:21,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-14 23:57:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-14 23:57:21,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 842 transitions. [2019-10-14 23:57:21,053 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 842 transitions. Word has length 143 [2019-10-14 23:57:21,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:21,054 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 842 transitions. [2019-10-14 23:57:21,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:57:21,054 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 842 transitions. [2019-10-14 23:57:21,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-14 23:57:21,057 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:21,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:57:21,057 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:21,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:21,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1793380711, now seen corresponding path program 1 times [2019-10-14 23:57:21,058 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:21,058 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318722278] [2019-10-14 23:57:21,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:21,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:21,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:21,140 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:21,141 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318722278] [2019-10-14 23:57:21,141 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:57:21,141 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:57:21,142 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335126577] [2019-10-14 23:57:21,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:57:21,143 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:21,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:57:21,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:57:21,144 INFO L87 Difference]: Start difference. First operand 626 states and 842 transitions. Second operand 6 states. [2019-10-14 23:57:22,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:22,058 INFO L93 Difference]: Finished difference Result 1858 states and 2598 transitions. [2019-10-14 23:57:22,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:57:22,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2019-10-14 23:57:22,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:22,073 INFO L225 Difference]: With dead ends: 1858 [2019-10-14 23:57:22,073 INFO L226 Difference]: Without dead ends: 1238 [2019-10-14 23:57:22,076 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 23:57:22,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2019-10-14 23:57:22,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1218. [2019-10-14 23:57:22,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2019-10-14 23:57:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1635 transitions. [2019-10-14 23:57:22,146 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1635 transitions. Word has length 147 [2019-10-14 23:57:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:22,147 INFO L462 AbstractCegarLoop]: Abstraction has 1218 states and 1635 transitions. [2019-10-14 23:57:22,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:57:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1635 transitions. [2019-10-14 23:57:22,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-14 23:57:22,153 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:22,153 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-14 23:57:22,153 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:22,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:22,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1396546535, now seen corresponding path program 1 times [2019-10-14 23:57:22,154 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:22,155 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919154679] [2019-10-14 23:57:22,155 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:22,155 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:22,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:22,311 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919154679] [2019-10-14 23:57:22,311 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113643492] [2019-10-14 23:57:22,311 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 23:57:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:22,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:57:22,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:57:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-14 23:57:22,627 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:57:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-14 23:57:22,743 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:57:22,743 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2019-10-14 23:57:22,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089035632] [2019-10-14 23:57:22,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:57:22,745 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:57:22,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:57:22,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:57:22,746 INFO L87 Difference]: Start difference. First operand 1218 states and 1635 transitions. Second operand 3 states. [2019-10-14 23:57:23,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:57:23,374 INFO L93 Difference]: Finished difference Result 3012 states and 4063 transitions. [2019-10-14 23:57:23,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:57:23,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2019-10-14 23:57:23,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:57:23,386 INFO L225 Difference]: With dead ends: 3012 [2019-10-14 23:57:23,386 INFO L226 Difference]: Without dead ends: 1060 [2019-10-14 23:57:23,393 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 360 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:57:23,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2019-10-14 23:57:23,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1060. [2019-10-14 23:57:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2019-10-14 23:57:23,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1379 transitions. [2019-10-14 23:57:23,444 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1379 transitions. Word has length 181 [2019-10-14 23:57:23,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:57:23,445 INFO L462 AbstractCegarLoop]: Abstraction has 1060 states and 1379 transitions. [2019-10-14 23:57:23,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:57:23,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1379 transitions. [2019-10-14 23:57:23,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-14 23:57:23,452 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:57:23,452 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:57:23,659 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:57:23,659 INFO L410 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:57:23,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:57:23,660 INFO L82 PathProgramCache]: Analyzing trace with hash -858695001, now seen corresponding path program 1 times [2019-10-14 23:57:23,660 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:57:23,660 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650831599] [2019-10-14 23:57:23,660 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:23,660 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:57:23,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:57:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:23,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650831599] [2019-10-14 23:57:23,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721118801] [2019-10-14 23:57:23,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:57:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:57:23,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:57:23,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:57:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:23,952 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:57:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:57:24,080 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1875697737] [2019-10-14 23:57:24,091 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 185 [2019-10-14 23:57:24,182 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:57:24,183 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)