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/Problem12_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 00:04:31,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:04:31,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:04:31,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 00:04:31,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 00:04:31,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 00:04:31,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 00:04:31,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 00:04:31,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 00:04:31,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 00:04:31,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 00:04:31,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 00:04:31,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:04:31,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:04:31,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:04:31,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:04:31,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:04:31,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:04:31,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:04:31,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:04:31,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:04:31,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:04:31,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:04:31,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:04:31,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 00:04:31,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 00:04:31,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 00:04:31,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 00:04:31,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 00:04:31,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 00:04:31,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 00:04:31,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 00:04:31,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 00:04:31,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:04:31,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:04:31,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:04:31,435 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 [2019-10-15 00:04:31,470 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:04:31,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:04:31,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:04:31,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:04:31,473 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:04:31,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:04:31,473 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:04:31,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:04:31,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:04:31,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:04:31,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:04:31,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:04:31,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:04:31,478 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:04:31,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:04:31,478 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:04:31,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:04:31,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:04:31,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:04:31,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:04:31,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:04:31,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:04:31,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:04:31,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:04:31,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:04:31,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:04:31,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:04:31,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:04:31,484 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 [2019-10-15 00:04:31,775 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:04:31,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:04:31,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:04:31,795 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:04:31,795 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:04:31,796 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2019-10-15 00:04:31,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d205437ea/41b3dceac64745298c30c75fe8b56b1a/FLAGd33a018c2 [2019-10-15 00:04:32,595 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:04:32,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2019-10-15 00:04:32,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d205437ea/41b3dceac64745298c30c75fe8b56b1a/FLAGd33a018c2 [2019-10-15 00:04:32,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d205437ea/41b3dceac64745298c30c75fe8b56b1a [2019-10-15 00:04:32,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:04:32,733 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:04:32,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:04:32,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:04:32,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:04:32,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:32" (1/1) ... [2019-10-15 00:04:32,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb7c29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:32, skipping insertion in model container [2019-10-15 00:04:32,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:32" (1/1) ... [2019-10-15 00:04:32,754 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:04:32,920 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:04:34,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:04:34,401 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:04:34,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:04:35,025 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:04:35,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:35 WrapperNode [2019-10-15 00:04:35,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:04:35,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:04:35,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:04:35,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:04:35,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:35" (1/1) ... [2019-10-15 00:04:35,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:35" (1/1) ... [2019-10-15 00:04:35,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:35" (1/1) ... [2019-10-15 00:04:35,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:35" (1/1) ... [2019-10-15 00:04:35,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:35" (1/1) ... [2019-10-15 00:04:35,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:35" (1/1) ... [2019-10-15 00:04:35,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:35" (1/1) ... [2019-10-15 00:04:35,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:04:35,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:04:35,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:04:35,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:04:35,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:04:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:04:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:04:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 00:04:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-15 00:04:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-15 00:04:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-15 00:04:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:04:35,448 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 00:04:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-15 00:04:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-15 00:04:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-15 00:04:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:04:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:04:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 00:04:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:04:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:04:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:04:40,955 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:04:40,955 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 00:04:40,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:40 BoogieIcfgContainer [2019-10-15 00:04:40,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:04:40,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:04:40,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:04:40,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:04:40,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:04:32" (1/3) ... [2019-10-15 00:04:40,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0c9a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:40, skipping insertion in model container [2019-10-15 00:04:40,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:35" (2/3) ... [2019-10-15 00:04:40,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0c9a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:40, skipping insertion in model container [2019-10-15 00:04:40,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:40" (3/3) ... [2019-10-15 00:04:40,977 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label16.c [2019-10-15 00:04:40,989 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:04:41,000 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:04:41,012 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:04:41,058 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:04:41,058 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:04:41,059 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:04:41,059 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:04:41,059 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:04:41,059 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:04:41,059 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:04:41,060 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:04:41,106 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-10-15 00:04:41,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-15 00:04:41,119 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:41,120 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] [2019-10-15 00:04:41,122 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:41,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:41,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1315979506, now seen corresponding path program 1 times [2019-10-15 00:04:41,138 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:41,139 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553883547] [2019-10-15 00:04:41,139 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:41,140 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:41,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:41,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553883547] [2019-10-15 00:04:41,560 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:04:41,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:04:41,561 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808886310] [2019-10-15 00:04:41,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:04:41,568 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:04:41,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:04:41,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:04:41,586 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-10-15 00:04:47,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:04:47,243 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-10-15 00:04:47,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:04:47,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2019-10-15 00:04:47,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:04:47,284 INFO L225 Difference]: With dead ends: 2443 [2019-10-15 00:04:47,284 INFO L226 Difference]: Without dead ends: 1542 [2019-10-15 00:04:47,301 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 [2019-10-15 00:04:47,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-10-15 00:04:47,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-10-15 00:04:47,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-10-15 00:04:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2822 transitions. [2019-10-15 00:04:47,666 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2822 transitions. Word has length 71 [2019-10-15 00:04:47,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:04:47,667 INFO L462 AbstractCegarLoop]: Abstraction has 1542 states and 2822 transitions. [2019-10-15 00:04:47,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:04:47,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2822 transitions. [2019-10-15 00:04:47,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-15 00:04:47,687 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:47,687 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 00:04:47,688 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:47,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:47,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1550888775, now seen corresponding path program 1 times [2019-10-15 00:04:47,690 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:47,690 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126590084] [2019-10-15 00:04:47,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:47,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:47,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:47,944 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126590084] [2019-10-15 00:04:47,944 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:04:47,944 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 00:04:47,945 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498328165] [2019-10-15 00:04:47,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 00:04:47,948 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:04:47,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 00:04:47,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 00:04:47,949 INFO L87 Difference]: Start difference. First operand 1542 states and 2822 transitions. Second operand 5 states. [2019-10-15 00:04:54,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:04:54,346 INFO L93 Difference]: Finished difference Result 3912 states and 7104 transitions. [2019-10-15 00:04:54,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:04:54,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2019-10-15 00:04:54,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:04:54,360 INFO L225 Difference]: With dead ends: 3912 [2019-10-15 00:04:54,361 INFO L226 Difference]: Without dead ends: 2376 [2019-10-15 00:04:54,365 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 00:04:54,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2019-10-15 00:04:54,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 2350. [2019-10-15 00:04:54,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2350 states. [2019-10-15 00:04:54,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3968 transitions. [2019-10-15 00:04:54,423 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3968 transitions. Word has length 144 [2019-10-15 00:04:54,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:04:54,424 INFO L462 AbstractCegarLoop]: Abstraction has 2350 states and 3968 transitions. [2019-10-15 00:04:54,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 00:04:54,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3968 transitions. [2019-10-15 00:04:54,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 00:04:54,426 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:54,427 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 00:04:54,427 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:54,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:54,427 INFO L82 PathProgramCache]: Analyzing trace with hash 318484651, now seen corresponding path program 1 times [2019-10-15 00:04:54,428 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:54,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081241535] [2019-10-15 00:04:54,428 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:54,428 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:54,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:54,599 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081241535] [2019-10-15 00:04:54,599 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:04:54,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 00:04:54,600 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991013420] [2019-10-15 00:04:54,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 00:04:54,606 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:04:54,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 00:04:54,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 00:04:54,608 INFO L87 Difference]: Start difference. First operand 2350 states and 3968 transitions. Second operand 4 states. [2019-10-15 00:05:02,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:05:02,638 INFO L93 Difference]: Finished difference Result 9360 states and 16172 transitions. [2019-10-15 00:05:02,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 00:05:02,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2019-10-15 00:05:02,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:05:02,676 INFO L225 Difference]: With dead ends: 9360 [2019-10-15 00:05:02,676 INFO L226 Difference]: Without dead ends: 7016 [2019-10-15 00:05:02,683 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 00:05:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7016 states. [2019-10-15 00:05:02,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7016 to 7016. [2019-10-15 00:05:02,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7016 states. [2019-10-15 00:05:02,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 11456 transitions. [2019-10-15 00:05:02,874 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 11456 transitions. Word has length 146 [2019-10-15 00:05:02,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:05:02,875 INFO L462 AbstractCegarLoop]: Abstraction has 7016 states and 11456 transitions. [2019-10-15 00:05:02,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 00:05:02,875 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 11456 transitions. [2019-10-15 00:05:02,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-15 00:05:02,877 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:05:02,878 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:05:02,878 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:05:02,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:05:02,878 INFO L82 PathProgramCache]: Analyzing trace with hash 702612695, now seen corresponding path program 1 times [2019-10-15 00:05:02,879 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:05:02,879 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288376761] [2019-10-15 00:05:02,879 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:05:02,879 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:05:02,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:05:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:05:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:05:03,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288376761] [2019-10-15 00:05:03,072 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:05:03,072 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:05:03,072 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394837206] [2019-10-15 00:05:03,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:05:03,073 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:05:03,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:05:03,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:05:03,074 INFO L87 Difference]: Start difference. First operand 7016 states and 11456 transitions. Second operand 6 states. [2019-10-15 00:05:09,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:05:09,293 INFO L93 Difference]: Finished difference Result 14265 states and 23554 transitions. [2019-10-15 00:05:09,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:05:09,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2019-10-15 00:05:09,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:05:09,329 INFO L225 Difference]: With dead ends: 14265 [2019-10-15 00:05:09,330 INFO L226 Difference]: Without dead ends: 7255 [2019-10-15 00:05:09,346 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 [2019-10-15 00:05:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7255 states.