java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:59:09,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:59:09,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:59:09,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:59:09,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:59:09,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:59:09,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:59:09,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:59:09,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:59:09,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:59:09,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:59:09,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:59:09,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:59:09,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:59:09,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:59:09,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:59:09,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:59:09,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:59:09,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:59:09,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:59:09,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:59:09,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:59:09,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:59:09,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:59:09,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:59:09,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:59:09,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:59:09,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:59:09,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:59:09,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:59:09,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:59:09,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:59:09,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:59:09,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:59:09,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:59:09,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:59:09,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:59:09,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:59:09,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:59:09,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:59:09,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:59:09,250 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 23:59:09,268 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:59:09,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:59:09,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:59:09,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:59:09,270 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:59:09,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:59:09,270 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:59:09,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:59:09,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:59:09,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:59:09,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:59:09,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:59:09,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:59:09,272 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:59:09,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:59:09,272 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:59:09,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:59:09,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:59:09,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:59:09,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:59:09,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:59:09,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:59:09,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:59:09,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:59:09,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:59:09,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:59:09,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:59:09,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:59:09,276 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 23:59:09,541 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:59:09,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:59:09,562 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:59:09,563 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:59:09,563 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:59:09,564 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label58.c [2019-10-14 23:59:09,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c098c1eed/fd0eb807af2f4f89887e83a15c5158cf/FLAGd23050ebd [2019-10-14 23:59:10,312 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:59:10,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label58.c [2019-10-14 23:59:10,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c098c1eed/fd0eb807af2f4f89887e83a15c5158cf/FLAGd23050ebd [2019-10-14 23:59:10,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c098c1eed/fd0eb807af2f4f89887e83a15c5158cf [2019-10-14 23:59:10,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:59:10,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:59:10,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:59:10,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:59:10,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:59:10,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:59:10" (1/1) ... [2019-10-14 23:59:10,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337d46e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:10, skipping insertion in model container [2019-10-14 23:59:10,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:59:10" (1/1) ... [2019-10-14 23:59:10,543 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:59:10,619 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:59:11,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:59:11,399 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:59:11,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:59:11,832 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:59:11,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:11 WrapperNode [2019-10-14 23:59:11,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:59:11,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:59:11,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:59:11,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:59:11,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:11" (1/1) ... [2019-10-14 23:59:11,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:11" (1/1) ... [2019-10-14 23:59:11,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:11" (1/1) ... [2019-10-14 23:59:11,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:11" (1/1) ... [2019-10-14 23:59:11,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:11" (1/1) ... [2019-10-14 23:59:12,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:11" (1/1) ... [2019-10-14 23:59:12,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:11" (1/1) ... [2019-10-14 23:59:12,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:59:12,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:59:12,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:59:12,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:59:12,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:11" (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 23:59:12,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:59:12,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:59:12,082 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:59:12,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:59:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:59:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:59:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:59:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:59:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:59:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:59:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:59:14,095 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:59:14,099 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:59:14,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:59:14 BoogieIcfgContainer [2019-10-14 23:59:14,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:59:14,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:59:14,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:59:14,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:59:14,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:59:10" (1/3) ... [2019-10-14 23:59:14,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7284fcfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:59:14, skipping insertion in model container [2019-10-14 23:59:14,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:11" (2/3) ... [2019-10-14 23:59:14,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7284fcfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:59:14, skipping insertion in model container [2019-10-14 23:59:14,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:59:14" (3/3) ... [2019-10-14 23:59:14,122 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label58.c [2019-10-14 23:59:14,136 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:59:14,153 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:59:14,167 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:59:14,219 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:59:14,220 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:59:14,220 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:59:14,221 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:59:14,221 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:59:14,221 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:59:14,221 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:59:14,222 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:59:14,268 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-10-14 23:59:14,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-14 23:59:14,294 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:14,296 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:59:14,299 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:14,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:14,307 INFO L82 PathProgramCache]: Analyzing trace with hash 321643717, now seen corresponding path program 1 times [2019-10-14 23:59:14,318 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:14,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603151818] [2019-10-14 23:59:14,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:14,320 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:14,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:15,277 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 23:59:15,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603151818] [2019-10-14 23:59:15,278 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:59:15,279 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:59:15,279 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638848661] [2019-10-14 23:59:15,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:59:15,286 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:59:15,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:59:15,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:59:15,305 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2019-10-14 23:59:17,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:59:17,561 INFO L93 Difference]: Finished difference Result 1076 states and 1932 transitions. [2019-10-14 23:59:17,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:59:17,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2019-10-14 23:59:17,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:59:17,595 INFO L225 Difference]: With dead ends: 1076 [2019-10-14 23:59:17,595 INFO L226 Difference]: Without dead ends: 683 [2019-10-14 23:59:17,605 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:59:17,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2019-10-14 23:59:17,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 458. [2019-10-14 23:59:17,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2019-10-14 23:59:17,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 752 transitions. [2019-10-14 23:59:17,743 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 752 transitions. Word has length 166 [2019-10-14 23:59:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:59:17,748 INFO L462 AbstractCegarLoop]: Abstraction has 458 states and 752 transitions. [2019-10-14 23:59:17,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:59:17,749 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 752 transitions. [2019-10-14 23:59:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-14 23:59:17,767 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:17,768 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:59:17,770 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:17,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:17,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1821574551, now seen corresponding path program 1 times [2019-10-14 23:59:17,771 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:17,772 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118732364] [2019-10-14 23:59:17,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:17,773 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:17,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:18,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118732364] [2019-10-14 23:59:18,025 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:59:18,027 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:59:18,028 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035495569] [2019-10-14 23:59:18,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:59:18,037 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:59:18,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:59:18,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:59:18,038 INFO L87 Difference]: Start difference. First operand 458 states and 752 transitions. Second operand 7 states. [2019-10-14 23:59:19,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:59:19,871 INFO L93 Difference]: Finished difference Result 1415 states and 2436 transitions. [2019-10-14 23:59:19,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:59:19,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2019-10-14 23:59:19,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:59:19,883 INFO L225 Difference]: With dead ends: 1415 [2019-10-14 23:59:19,884 INFO L226 Difference]: Without dead ends: 963 [2019-10-14 23:59:19,887 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:59:19,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2019-10-14 23:59:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 906. [2019-10-14 23:59:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2019-10-14 23:59:19,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1482 transitions. [2019-10-14 23:59:19,959 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1482 transitions. Word has length 182 [2019-10-14 23:59:19,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:59:19,959 INFO L462 AbstractCegarLoop]: Abstraction has 906 states and 1482 transitions. [2019-10-14 23:59:19,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:59:19,960 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1482 transitions. [2019-10-14 23:59:19,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-14 23:59:19,964 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:19,965 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:59:19,965 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:19,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:19,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1383589330, now seen corresponding path program 1 times [2019-10-14 23:59:19,966 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:19,966 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469833665] [2019-10-14 23:59:19,967 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:19,967 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:19,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:20,136 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469833665] [2019-10-14 23:59:20,137 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:59:20,137 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:59:20,138 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361463006] [2019-10-14 23:59:20,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:59:20,140 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:59:20,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:59:20,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:59:20,141 INFO L87 Difference]: Start difference. First operand 906 states and 1482 transitions. Second operand 6 states. [2019-10-14 23:59:21,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:59:21,956 INFO L93 Difference]: Finished difference Result 2754 states and 4762 transitions. [2019-10-14 23:59:21,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:59:21,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2019-10-14 23:59:21,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:59:21,971 INFO L225 Difference]: With dead ends: 2754 [2019-10-14 23:59:21,971 INFO L226 Difference]: Without dead ends: 1854 [2019-10-14 23:59:21,974 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 23:59:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2019-10-14 23:59:22,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1788. [2019-10-14 23:59:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1788 states. [2019-10-14 23:59:22,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2937 transitions. [2019-10-14 23:59:22,057 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2937 transitions. Word has length 183 [2019-10-14 23:59:22,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:59:22,057 INFO L462 AbstractCegarLoop]: Abstraction has 1788 states and 2937 transitions. [2019-10-14 23:59:22,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:59:22,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2937 transitions. [2019-10-14 23:59:22,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-14 23:59:22,065 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:22,066 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:59:22,066 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:22,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:22,067 INFO L82 PathProgramCache]: Analyzing trace with hash -819957242, now seen corresponding path program 1 times [2019-10-14 23:59:22,067 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:22,068 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830657265] [2019-10-14 23:59:22,068 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:22,068 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:22,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:22,199 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 23:59:22,200 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830657265] [2019-10-14 23:59:22,200 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146815611] [2019-10-14 23:59:22,200 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 23:59:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:22,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-14 23:59:22,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:59:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-14 23:59:22,553 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:59:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 23:59:22,676 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:59:22,676 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2019-10-14 23:59:22,676 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875790003] [2019-10-14 23:59:22,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:59:22,677 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:59:22,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:59:22,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:59:22,678 INFO L87 Difference]: Start difference. First operand 1788 states and 2937 transitions. Second operand 5 states. [2019-10-14 23:59:23,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:59:23,289 INFO L93 Difference]: Finished difference Result 5418 states and 9180 transitions. [2019-10-14 23:59:23,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:59:23,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2019-10-14 23:59:23,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:59:23,318 INFO L225 Difference]: With dead ends: 5418 [2019-10-14 23:59:23,318 INFO L226 Difference]: Without dead ends: 3636 [2019-10-14 23:59:23,324 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 376 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:59:23,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2019-10-14 23:59:23,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3600. [2019-10-14 23:59:23,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3600 states. [2019-10-14 23:59:23,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 5995 transitions. [2019-10-14 23:59:23,460 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 5995 transitions. Word has length 191 [2019-10-14 23:59:23,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:59:23,461 INFO L462 AbstractCegarLoop]: Abstraction has 3600 states and 5995 transitions. [2019-10-14 23:59:23,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:59:23,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 5995 transitions. [2019-10-14 23:59:23,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-14 23:59:23,473 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:23,473 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:59:23,680 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:59:23,681 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:23,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:23,682 INFO L82 PathProgramCache]: Analyzing trace with hash -726658347, now seen corresponding path program 1 times [2019-10-14 23:59:23,682 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:23,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323669742] [2019-10-14 23:59:23,683 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:23,683 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:23,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:23,946 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323669742] [2019-10-14 23:59:23,946 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211156020] [2019-10-14 23:59:23,947 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 23:59:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:24,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-14 23:59:24,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:59:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 23:59:24,451 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:59:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 23:59:24,579 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1570654218] [2019-10-14 23:59:24,587 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 195 [2019-10-14 23:59:24,654 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:59:24,654 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)