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/Problem13_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 17:02:54,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 17:02:54,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 17:02:54,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 17:02:54,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 17:02:54,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 17:02:54,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 17:02:54,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 17:02:54,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 17:02:54,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 17:02:54,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 17:02:54,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 17:02:54,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 17:02:54,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 17:02:54,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 17:02:54,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 17:02:54,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 17:02:54,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 17:02:54,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 17:02:54,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 17:02:54,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 17:02:54,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 17:02:54,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 17:02:54,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 17:02:54,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-09 17:02:54,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-09 17:02:54,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-09 17:02:54,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-09 17:02:54,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-09 17:02:54,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-09 17:02:54,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 17:02:54,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 17:02:54,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 17:02:54,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 17:02:54,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 17:02:54,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 17:02:54,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 17:02:54,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 17:02:54,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 17:02:54,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 17:02:54,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 17:02:54,697 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 17:02:54,712 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 17:02:54,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 17:02:54,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 17:02:54,713 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 17:02:54,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 17:02:54,714 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 17:02:54,714 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 17:02:54,714 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 17:02:54,714 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 17:02:54,715 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 17:02:54,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 17:02:54,715 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 17:02:54,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 17:02:54,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 17:02:54,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 17:02:54,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 17:02:54,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 17:02:54,716 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 17:02:54,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 17:02:54,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 17:02:54,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 17:02:54,717 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 17:02:54,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 17:02:54,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 17:02:54,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 17:02:54,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 17:02:54,718 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 17:02:54,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 17:02:54,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 17:02:54,719 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 17:02:54,760 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 17:02:54,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 17:02:54,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 17:02:54,776 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 17:02:54,776 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 17:02:54,777 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label07.c [2019-09-09 17:02:54,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0ac9414e/3db91fab2ca84d52a5e46961a4480c35/FLAG2754650bb [2019-09-09 17:02:55,641 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 17:02:55,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label07.c [2019-09-09 17:02:55,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0ac9414e/3db91fab2ca84d52a5e46961a4480c35/FLAG2754650bb [2019-09-09 17:02:56,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0ac9414e/3db91fab2ca84d52a5e46961a4480c35 [2019-09-09 17:02:56,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 17:02:56,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 17:02:56,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 17:02:56,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 17:02:56,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 17:02:56,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:02:56" (1/1) ... [2019-09-09 17:02:56,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2cc761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:02:56, skipping insertion in model container [2019-09-09 17:02:56,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:02:56" (1/1) ... [2019-09-09 17:02:56,221 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 17:02:56,415 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 17:02:58,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 17:02:58,076 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 17:02:58,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 17:02:58,893 INFO L192 MainTranslator]: Completed translation [2019-09-09 17:02:58,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:02:58 WrapperNode [2019-09-09 17:02:58,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 17:02:58,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 17:02:58,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 17:02:58,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 17:02:58,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:02:58" (1/1) ... [2019-09-09 17:02:58,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:02:58" (1/1) ... [2019-09-09 17:02:59,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:02:58" (1/1) ... [2019-09-09 17:02:59,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:02:58" (1/1) ... [2019-09-09 17:02:59,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:02:58" (1/1) ... [2019-09-09 17:02:59,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:02:58" (1/1) ... [2019-09-09 17:02:59,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:02:58" (1/1) ... [2019-09-09 17:02:59,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 17:02:59,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 17:02:59,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 17:02:59,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 17:02:59,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:02:58" (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 17:02:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 17:02:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 17:02:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 17:02:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 17:02:59,376 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 17:02:59,376 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 17:02:59,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 17:02:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 17:02:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 17:02:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 17:02:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 17:02:59,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 17:02:59,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 17:02:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 17:02:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 17:02:59,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 17:02:59,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 17:03:05,446 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 17:03:05,449 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 17:03:05,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:03:05 BoogieIcfgContainer [2019-09-09 17:03:05,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 17:03:05,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 17:03:05,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 17:03:05,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 17:03:05,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:02:56" (1/3) ... [2019-09-09 17:03:05,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3d35de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:03:05, skipping insertion in model container [2019-09-09 17:03:05,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:02:58" (2/3) ... [2019-09-09 17:03:05,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3d35de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:03:05, skipping insertion in model container [2019-09-09 17:03:05,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:03:05" (3/3) ... [2019-09-09 17:03:05,463 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label07.c [2019-09-09 17:03:05,474 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 17:03:05,485 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 17:03:05,504 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 17:03:05,538 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 17:03:05,539 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 17:03:05,539 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 17:03:05,539 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 17:03:05,539 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 17:03:05,539 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 17:03:05,539 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 17:03:05,539 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 17:03:05,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-09 17:03:05,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-09 17:03:05,596 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:03:05,597 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, 1] [2019-09-09 17:03:05,599 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:03:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:03:05,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1124378712, now seen corresponding path program 1 times [2019-09-09 17:03:05,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:03:05,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:03:05,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:03:05,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:03:05,654 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:03:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:03:05,886 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 17:03:05,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:03:05,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 17:03:05,889 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:03:05,895 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 17:03:05,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 17:03:05,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 17:03:05,914 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 3 states. [2019-09-09 17:03:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:03:12,600 INFO L93 Difference]: Finished difference Result 1988 states and 3495 transitions. [2019-09-09 17:03:12,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 17:03:12,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-09-09 17:03:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:03:12,640 INFO L225 Difference]: With dead ends: 1988 [2019-09-09 17:03:12,641 INFO L226 Difference]: Without dead ends: 1920 [2019-09-09 17:03:12,642 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 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 17:03:12,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2019-09-09 17:03:12,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1903. [2019-09-09 17:03:12,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1903 states. [2019-09-09 17:03:12,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 3344 transitions. [2019-09-09 17:03:12,799 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 3344 transitions. Word has length 27 [2019-09-09 17:03:12,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:03:12,800 INFO L475 AbstractCegarLoop]: Abstraction has 1903 states and 3344 transitions. [2019-09-09 17:03:12,800 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 17:03:12,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 3344 transitions. [2019-09-09 17:03:12,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-09 17:03:12,806 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:03:12,807 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 17:03:12,807 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:03:12,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:03:12,809 INFO L82 PathProgramCache]: Analyzing trace with hash -2049609055, now seen corresponding path program 1 times [2019-09-09 17:03:12,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:03:12,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:03:12,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:03:12,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:03:12,811 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:03:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:03:13,079 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:03:13,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:03:13,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 17:03:13,080 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:03:13,081 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 17:03:13,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 17:03:13,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 17:03:13,082 INFO L87 Difference]: Start difference. First operand 1903 states and 3344 transitions. Second operand 5 states. [2019-09-09 17:03:20,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:03:20,986 INFO L93 Difference]: Finished difference Result 3620 states and 5742 transitions. [2019-09-09 17:03:20,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 17:03:20,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2019-09-09 17:03:20,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:03:21,009 INFO L225 Difference]: With dead ends: 3620 [2019-09-09 17:03:21,010 INFO L226 Difference]: Without dead ends: 3620 [2019-09-09 17:03:21,011 INFO L628 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 [2019-09-09 17:03:21,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2019-09-09 17:03:21,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3590. [2019-09-09 17:03:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3590 states. [2019-09-09 17:03:21,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 5678 transitions. [2019-09-09 17:03:21,114 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 5678 transitions. Word has length 96 [2019-09-09 17:03:21,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:03:21,115 INFO L475 AbstractCegarLoop]: Abstraction has 3590 states and 5678 transitions. [2019-09-09 17:03:21,115 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 17:03:21,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 5678 transitions. [2019-09-09 17:03:21,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-09 17:03:21,117 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:03:21,118 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 17:03:21,118 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:03:21,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:03:21,119 INFO L82 PathProgramCache]: Analyzing trace with hash -949085051, now seen corresponding path program 1 times [2019-09-09 17:03:21,119 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:03:21,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:03:21,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:03:21,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:03:21,120 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:03:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:03:21,242 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:03:21,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:03:21,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 17:03:21,243 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:03:21,244 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 17:03:21,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 17:03:21,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 17:03:21,245 INFO L87 Difference]: Start difference. First operand 3590 states and 5678 transitions. Second operand 5 states. [2019-09-09 17:03:29,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:03:29,959 INFO L93 Difference]: Finished difference Result 7200 states and 10682 transitions. [2019-09-09 17:03:29,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 17:03:29,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-09-09 17:03:29,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:03:30,005 INFO L225 Difference]: With dead ends: 7200 [2019-09-09 17:03:30,005 INFO L226 Difference]: Without dead ends: 7200 [2019-09-09 17:03:30,015 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 17:03:30,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7200 states. [2019-09-09 17:03:30,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7200 to 7049. [2019-09-09 17:03:30,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7049 states. [2019-09-09 17:03:30,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7049 states to 7049 states and 10340 transitions. [2019-09-09 17:03:30,231 INFO L78 Accepts]: Start accepts. Automaton has 7049 states and 10340 transitions. Word has length 98 [2019-09-09 17:03:30,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:03:30,232 INFO L475 AbstractCegarLoop]: Abstraction has 7049 states and 10340 transitions. [2019-09-09 17:03:30,232 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 17:03:30,232 INFO L276 IsEmpty]: Start isEmpty. Operand 7049 states and 10340 transitions. [2019-09-09 17:03:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-09-09 17:03:30,239 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:03:30,240 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 17:03:30,240 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:03:30,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:03:30,240 INFO L82 PathProgramCache]: Analyzing trace with hash 6656721, now seen corresponding path program 1 times [2019-09-09 17:03:30,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:03:30,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:03:30,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:03:30,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:03:30,242 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:03:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:03:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-09 17:03:30,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 17:03:30,451 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 17:03:30,452 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 121 with the following transitions: [2019-09-09 17:03:30,457 INFO L207 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2751], [2753], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [4238], [4242], [4251], [4255], [4257], [4268], [4269], [4270], [4272], [4273] [2019-09-09 17:03:30,549 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 17:03:30,549 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 17:04:04,110 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 17:04:04,113 INFO L272 AbstractInterpreter]: Visited 97 different actions 97 times. Never merged. Never widened. Performed 138 root evaluator evaluations with a maximum evaluation depth of 17. Performed 138 inverse root evaluator evaluations with a maximum inverse evaluation depth of 17. Never found a fixpoint. Largest state had 26 variables. [2019-09-09 17:04:04,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:04:04,118 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 17:04:29,142 INFO L227 lantSequenceWeakener]: Weakened 114 states. On average, predicates are now at 70.8% of their original sizes. [2019-09-09 17:04:29,142 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 17:04:29,176 INFO L420 sIntCurrentIteration]: We unified 119 AI predicates to 119 [2019-09-09 17:04:29,177 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 17:04:29,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 17:04:29,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2019-09-09 17:04:29,178 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:04:29,179 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-09 17:04:29,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-09 17:04:29,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-09 17:04:29,180 INFO L87 Difference]: Start difference. First operand 7049 states and 10340 transitions. Second operand 7 states. [2019-09-09 17:06:22,911 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.