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_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 00:04:43,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:04:43,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:04:43,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 00:04:43,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 00:04:43,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 00:04:43,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 00:04:43,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 00:04:43,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 00:04:43,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 00:04:43,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 00:04:43,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 00:04:43,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:04:43,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:04:43,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:04:43,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:04:43,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:04:43,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:04:43,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:04:43,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:04:43,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:04:43,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:04:43,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:04:43,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:04:43,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 00:04:43,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 00:04:43,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 00:04:43,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 00:04:43,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 00:04:43,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 00:04:43,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 00:04:43,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 00:04:43,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 00:04:43,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:04:43,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:04:43,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:04:43,237 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 00:04:43,251 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:04:43,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:04:43,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:04:43,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:04:43,253 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:04:43,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:04:43,254 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:04:43,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:04:43,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:04:43,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:04:43,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:04:43,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:04:43,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:04:43,255 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:04:43,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:04:43,255 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:04:43,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:04:43,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:04:43,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:04:43,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:04:43,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:04:43,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:04:43,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:04:43,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:04:43,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:04:43,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:04:43,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:04:43,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:04:43,258 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 00:04:43,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:04:43,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:04:43,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:04:43,595 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:04:43,596 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:04:43,597 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label24.c [2019-10-15 00:04:43,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35dfa1fb8/a0758eb3ca974541a449b261e1e0304f/FLAG60a46af50 [2019-10-15 00:04:44,419 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:04:44,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label24.c [2019-10-15 00:04:44,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35dfa1fb8/a0758eb3ca974541a449b261e1e0304f/FLAG60a46af50 [2019-10-15 00:04:44,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35dfa1fb8/a0758eb3ca974541a449b261e1e0304f [2019-10-15 00:04:44,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:04:44,494 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:04:44,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:04:44,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:04:44,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:04:44,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:44" (1/1) ... [2019-10-15 00:04:44,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb79a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:44, skipping insertion in model container [2019-10-15 00:04:44,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:44" (1/1) ... [2019-10-15 00:04:44,516 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:04:44,674 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:04:46,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:04:46,324 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:04:46,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:04:46,941 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:04:46,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46 WrapperNode [2019-10-15 00:04:46,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:04:46,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:04:46,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:04:46,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:04:46,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (1/1) ... [2019-10-15 00:04:46,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (1/1) ... [2019-10-15 00:04:46,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (1/1) ... [2019-10-15 00:04:46,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (1/1) ... [2019-10-15 00:04:47,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (1/1) ... [2019-10-15 00:04:47,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (1/1) ... [2019-10-15 00:04:47,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (1/1) ... [2019-10-15 00:04:47,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:04:47,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:04:47,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:04:47,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:04:47,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (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 00:04:47,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:04:47,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:04:47,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 00:04:47,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-15 00:04:47,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-15 00:04:47,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-15 00:04:47,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:04:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 00:04:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-15 00:04:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-15 00:04:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-15 00:04:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:04:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:04:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 00:04:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:04:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:04:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:04:52,434 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:04:52,436 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 00:04:52,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:52 BoogieIcfgContainer [2019-10-15 00:04:52,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:04:52,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:04:52,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:04:52,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:04:52,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:04:44" (1/3) ... [2019-10-15 00:04:52,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c44f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:52, skipping insertion in model container [2019-10-15 00:04:52,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:46" (2/3) ... [2019-10-15 00:04:52,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c44f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:52, skipping insertion in model container [2019-10-15 00:04:52,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:52" (3/3) ... [2019-10-15 00:04:52,455 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label24.c [2019-10-15 00:04:52,470 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:04:52,481 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:04:52,493 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:04:52,538 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:04:52,538 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:04:52,538 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:04:52,538 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:04:52,538 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:04:52,538 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:04:52,538 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:04:52,539 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:04:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-10-15 00:04:52,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-15 00:04:52,590 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:52,591 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] [2019-10-15 00:04:52,593 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:52,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:52,599 INFO L82 PathProgramCache]: Analyzing trace with hash 721508781, now seen corresponding path program 1 times [2019-10-15 00:04:52,609 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:52,610 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643990985] [2019-10-15 00:04:52,610 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:52,610 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:52,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:52,898 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 00:04:52,899 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643990985] [2019-10-15 00:04:52,900 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:04:52,900 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:04:52,900 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172049318] [2019-10-15 00:04:52,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:04:52,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:04:52,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:04:52,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:04:52,926 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-10-15 00:04:58,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:04:58,274 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-10-15 00:04:58,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:04:58,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-15 00:04:58,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:04:58,307 INFO L225 Difference]: With dead ends: 2443 [2019-10-15 00:04:58,307 INFO L226 Difference]: Without dead ends: 1542 [2019-10-15 00:04:58,316 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 00:04:58,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-10-15 00:04:58,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-10-15 00:04:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-10-15 00:04:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2822 transitions. [2019-10-15 00:04:58,493 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2822 transitions. Word has length 52 [2019-10-15 00:04:58,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:04:58,494 INFO L462 AbstractCegarLoop]: Abstraction has 1542 states and 2822 transitions. [2019-10-15 00:04:58,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:04:58,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2822 transitions. [2019-10-15 00:04:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 00:04:58,501 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:58,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:04:58,502 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:58,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:58,503 INFO L82 PathProgramCache]: Analyzing trace with hash -511527591, now seen corresponding path program 1 times [2019-10-15 00:04:58,503 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:58,503 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420499789] [2019-10-15 00:04:58,503 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:58,504 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:58,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:58,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420499789] [2019-10-15 00:04:58,790 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:04:58,790 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 00:04:58,790 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321336738] [2019-10-15 00:04:58,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 00:04:58,794 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:04:58,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 00:04:58,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 00:04:58,795 INFO L87 Difference]: Start difference. First operand 1542 states and 2822 transitions. Second operand 5 states. [2019-10-15 00:05:05,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:05:05,312 INFO L93 Difference]: Finished difference Result 3912 states and 7104 transitions. [2019-10-15 00:05:05,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:05:05,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2019-10-15 00:05:05,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:05:05,328 INFO L225 Difference]: With dead ends: 3912 [2019-10-15 00:05:05,328 INFO L226 Difference]: Without dead ends: 2376 [2019-10-15 00:05:05,333 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 00:05:05,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2019-10-15 00:05:05,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 2350. [2019-10-15 00:05:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2350 states. [2019-10-15 00:05:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3968 transitions. [2019-10-15 00:05:05,411 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3968 transitions. Word has length 125 [2019-10-15 00:05:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:05:05,411 INFO L462 AbstractCegarLoop]: Abstraction has 2350 states and 3968 transitions. [2019-10-15 00:05:05,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 00:05:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3968 transitions. [2019-10-15 00:05:05,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-15 00:05:05,415 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:05:05,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:05:05,416 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:05:05,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:05:05,416 INFO L82 PathProgramCache]: Analyzing trace with hash -644607435, now seen corresponding path program 1 times [2019-10-15 00:05:05,416 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:05:05,417 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048448960] [2019-10-15 00:05:05,417 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:05:05,417 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:05:05,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:05:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:05:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:05:05,661 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048448960] [2019-10-15 00:05:05,661 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722474611] [2019-10-15 00:05:05,662 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 [2019-10-15 00:05:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:05:05,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 00:05:05,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:05:05,885 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:05:05,886 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:05:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:05:05,939 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 00:05:05,939 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2019-10-15 00:05:05,940 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101509262] [2019-10-15 00:05:05,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 00:05:05,941 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:05:05,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 00:05:05,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-15 00:05:05,942 INFO L87 Difference]: Start difference. First operand 2350 states and 3968 transitions. Second operand 4 states. [2019-10-15 00:05:13,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:05:13,952 INFO L93 Difference]: Finished difference Result 9360 states and 16158 transitions. [2019-10-15 00:05:13,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 00:05:13,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-10-15 00:05:13,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:05:14,006 INFO L225 Difference]: With dead ends: 9360 [2019-10-15 00:05:14,007 INFO L226 Difference]: Without dead ends: 7016 [2019-10-15 00:05:14,013 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 255 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-15 00:05:14,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7016 states. [2019-10-15 00:05:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7016 to 7016. [2019-10-15 00:05:14,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7016 states. [2019-10-15 00:05:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 10480 transitions. [2019-10-15 00:05:14,220 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 10480 transitions. Word has length 127 [2019-10-15 00:05:14,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:05:14,225 INFO L462 AbstractCegarLoop]: Abstraction has 7016 states and 10480 transitions. [2019-10-15 00:05:14,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 00:05:14,225 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 10480 transitions. [2019-10-15 00:05:14,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 00:05:14,236 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:05:14,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:05:14,441 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:05:14,441 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:05:14,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:05:14,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1694615351, now seen corresponding path program 1 times [2019-10-15 00:05:14,443 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:05:14,443 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968497715] [2019-10-15 00:05:14,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:05:14,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:05:14,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:05:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:05:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:05:14,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968497715] [2019-10-15 00:05:14,630 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:05:14,630 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:05:14,630 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851203970] [2019-10-15 00:05:14,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:05:14,631 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:05:14,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:05:14,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:05:14,632 INFO L87 Difference]: Start difference. First operand 7016 states and 10480 transitions. Second operand 6 states.