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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 15:22:21,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 15:22:21,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 15:22:21,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 15:22:21,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 15:22:21,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 15:22:21,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 15:22:21,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 15:22:21,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 15:22:21,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 15:22:21,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 15:22:21,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 15:22:21,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 15:22:21,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 15:22:21,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 15:22:21,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 15:22:21,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 15:22:21,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 15:22:21,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 15:22:21,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 15:22:21,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 15:22:21,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 15:22:21,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 15:22:21,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 15:22:21,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-09 15:22:21,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-09 15:22:21,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-09 15:22:21,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-09 15:22:21,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-09 15:22:21,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-09 15:22:21,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 15:22:21,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 15:22:21,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 15:22:21,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 15:22:21,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 15:22:21,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 15:22:21,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 15:22:21,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 15:22:21,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 15:22:21,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 15:22:21,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 15:22:21,342 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 15:22:21,367 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 15:22:21,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 15:22:21,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 15:22:21,371 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 15:22:21,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 15:22:21,372 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 15:22:21,372 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 15:22:21,372 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 15:22:21,372 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 15:22:21,373 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 15:22:21,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 15:22:21,374 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 15:22:21,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 15:22:21,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 15:22:21,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 15:22:21,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 15:22:21,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 15:22:21,376 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 15:22:21,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 15:22:21,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 15:22:21,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 15:22:21,377 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 15:22:21,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 15:22:21,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 15:22:21,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 15:22:21,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 15:22:21,379 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 15:22:21,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 15:22:21,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 15:22:21,379 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 15:22:21,431 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 15:22:21,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 15:22:21,455 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 15:22:21,457 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 15:22:21,457 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 15:22:21,458 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label29.c [2019-09-09 15:22:21,518 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/871c1b329/56ca8e19586c49bcaf33d5d24e93734b/FLAG99ed07a14 [2019-09-09 15:22:22,096 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 15:22:22,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label29.c [2019-09-09 15:22:22,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/871c1b329/56ca8e19586c49bcaf33d5d24e93734b/FLAG99ed07a14 [2019-09-09 15:22:22,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/871c1b329/56ca8e19586c49bcaf33d5d24e93734b [2019-09-09 15:22:22,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 15:22:22,348 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 15:22:22,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 15:22:22,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 15:22:22,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 15:22:22,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 03:22:22" (1/1) ... [2019-09-09 15:22:22,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779b0c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:22:22, skipping insertion in model container [2019-09-09 15:22:22,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 03:22:22" (1/1) ... [2019-09-09 15:22:22,364 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 15:22:22,422 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 15:22:23,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 15:22:23,071 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 15:22:23,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 15:22:23,418 INFO L192 MainTranslator]: Completed translation [2019-09-09 15:22:23,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:22:23 WrapperNode [2019-09-09 15:22:23,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 15:22:23,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 15:22:23,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 15:22:23,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 15:22:23,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:22:23" (1/1) ... [2019-09-09 15:22:23,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:22:23" (1/1) ... [2019-09-09 15:22:23,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:22:23" (1/1) ... [2019-09-09 15:22:23,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:22:23" (1/1) ... [2019-09-09 15:22:23,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:22:23" (1/1) ... [2019-09-09 15:22:23,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:22:23" (1/1) ... [2019-09-09 15:22:23,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:22:23" (1/1) ... [2019-09-09 15:22:23,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 15:22:23,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 15:22:23,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 15:22:23,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 15:22:23,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:22:23" (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 [2019-09-09 15:22:23,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 15:22:23,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 15:22:23,703 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 15:22:23,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 15:22:23,703 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 15:22:23,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 15:22:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 15:22:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 15:22:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 15:22:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 15:22:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 15:22:25,601 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 15:22:25,602 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 15:22:25,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 03:22:25 BoogieIcfgContainer [2019-09-09 15:22:25,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 15:22:25,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 15:22:25,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 15:22:25,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 15:22:25,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 03:22:22" (1/3) ... [2019-09-09 15:22:25,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddb6603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 03:22:25, skipping insertion in model container [2019-09-09 15:22:25,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:22:23" (2/3) ... [2019-09-09 15:22:25,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddb6603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 03:22:25, skipping insertion in model container [2019-09-09 15:22:25,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 03:22:25" (3/3) ... [2019-09-09 15:22:25,612 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label29.c [2019-09-09 15:22:25,623 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 15:22:25,634 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 15:22:25,652 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 15:22:25,684 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 15:22:25,685 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 15:22:25,685 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 15:22:25,685 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 15:22:25,685 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 15:22:25,686 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 15:22:25,686 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 15:22:25,686 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 15:22:25,728 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-09-09 15:22:25,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-09 15:22:25,741 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:22:25,742 INFO L399 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] [2019-09-09 15:22:25,744 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:22:25,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:22:25,752 INFO L82 PathProgramCache]: Analyzing trace with hash 2007465363, now seen corresponding path program 1 times [2019-09-09 15:22:25,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:22:25,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:22:25,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:22:25,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:22:25,812 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:22:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:22:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:22:26,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:22:26,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 15:22:26,098 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:22:26,103 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 15:22:26,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 15:22:26,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 15:22:26,121 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 3 states. [2019-09-09 15:22:27,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:22:27,535 INFO L93 Difference]: Finished difference Result 496 states and 803 transitions. [2019-09-09 15:22:27,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 15:22:27,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-09-09 15:22:27,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:22:27,555 INFO L225 Difference]: With dead ends: 496 [2019-09-09 15:22:27,556 INFO L226 Difference]: Without dead ends: 428 [2019-09-09 15:22:27,558 INFO L628 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 [2019-09-09 15:22:27,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2019-09-09 15:22:27,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 420. [2019-09-09 15:22:27,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2019-09-09 15:22:27,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 671 transitions. [2019-09-09 15:22:27,650 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 671 transitions. Word has length 26 [2019-09-09 15:22:27,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:22:27,651 INFO L475 AbstractCegarLoop]: Abstraction has 420 states and 671 transitions. [2019-09-09 15:22:27,651 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 15:22:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 671 transitions. [2019-09-09 15:22:27,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-09-09 15:22:27,655 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:22:27,655 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 15:22:27,656 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:22:27,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:22:27,656 INFO L82 PathProgramCache]: Analyzing trace with hash -954827699, now seen corresponding path program 1 times [2019-09-09 15:22:27,657 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:22:27,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:22:27,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:22:27,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:22:27,658 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:22:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:22:27,937 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:22:27,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:22:27,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 15:22:27,938 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:22:27,940 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 15:22:27,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 15:22:27,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 15:22:27,941 INFO L87 Difference]: Start difference. First operand 420 states and 671 transitions. Second operand 6 states. [2019-09-09 15:22:29,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:22:29,689 INFO L93 Difference]: Finished difference Result 839 states and 1212 transitions. [2019-09-09 15:22:29,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-09 15:22:29,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-09-09 15:22:29,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:22:29,697 INFO L225 Difference]: With dead ends: 839 [2019-09-09 15:22:29,697 INFO L226 Difference]: Without dead ends: 839 [2019-09-09 15:22:29,698 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-09 15:22:29,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2019-09-09 15:22:29,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 817. [2019-09-09 15:22:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2019-09-09 15:22:29,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1173 transitions. [2019-09-09 15:22:29,747 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1173 transitions. Word has length 95 [2019-09-09 15:22:29,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:22:29,747 INFO L475 AbstractCegarLoop]: Abstraction has 817 states and 1173 transitions. [2019-09-09 15:22:29,747 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 15:22:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1173 transitions. [2019-09-09 15:22:29,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-09 15:22:29,751 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:22:29,752 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 15:22:29,752 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:22:29,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:22:29,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1471750030, now seen corresponding path program 1 times [2019-09-09 15:22:29,753 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:22:29,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:22:29,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:22:29,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:22:29,754 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:22:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:22:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:22:29,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:22:29,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 15:22:29,944 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:22:29,946 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 15:22:29,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 15:22:29,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 15:22:29,947 INFO L87 Difference]: Start difference. First operand 817 states and 1173 transitions. Second operand 6 states. [2019-09-09 15:22:31,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:22:31,530 INFO L93 Difference]: Finished difference Result 1235 states and 1754 transitions. [2019-09-09 15:22:31,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 15:22:31,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-09-09 15:22:31,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:22:31,539 INFO L225 Difference]: With dead ends: 1235 [2019-09-09 15:22:31,540 INFO L226 Difference]: Without dead ends: 1235 [2019-09-09 15:22:31,540 INFO L628 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 [2019-09-09 15:22:31,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2019-09-09 15:22:31,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1221. [2019-09-09 15:22:31,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1221 states. [2019-09-09 15:22:31,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1724 transitions. [2019-09-09 15:22:31,588 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1724 transitions. Word has length 98 [2019-09-09 15:22:31,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:22:31,589 INFO L475 AbstractCegarLoop]: Abstraction has 1221 states and 1724 transitions. [2019-09-09 15:22:31,589 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 15:22:31,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1724 transitions. [2019-09-09 15:22:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-09 15:22:31,591 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:22:31,592 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 15:22:31,592 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:22:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:22:31,592 INFO L82 PathProgramCache]: Analyzing trace with hash 698002821, now seen corresponding path program 1 times [2019-09-09 15:22:31,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:22:31,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:22:31,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:22:31,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:22:31,594 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:22:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:22:31,759 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:22:31,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 15:22:31,760 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 15:22:31,761 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 100 with the following transitions: [2019-09-09 15:22:31,763 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [1084], [1088], [1097], [1101], [1103], [1108], [1109], [1110], [1112], [1113] [2019-09-09 15:22:31,901 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 15:22:31,901 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 15:22:58,249 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 15:22:58,251 INFO L272 AbstractInterpreter]: Visited 77 different actions 77 times. Never merged. Never widened. Performed 203 root evaluator evaluations with a maximum evaluation depth of 16. Performed 203 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Never found a fixpoint. Largest state had 28 variables. [2019-09-09 15:22:58,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:22:58,256 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 15:23:19,610 INFO L227 lantSequenceWeakener]: Weakened 85 states. On average, predicates are now at 73.73% of their original sizes. [2019-09-09 15:23:19,611 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 15:23:19,683 INFO L420 sIntCurrentIteration]: We unified 98 AI predicates to 98 [2019-09-09 15:23:19,683 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 15:23:19,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 15:23:19,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2019-09-09 15:23:19,684 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:23:19,685 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 15:23:19,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 15:23:19,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-09 15:23:19,686 INFO L87 Difference]: Start difference. First operand 1221 states and 1724 transitions. Second operand 10 states. [2019-09-09 15:36:33,279 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.