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_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 17:18:38,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 17:18:38,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 17:18:38,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 17:18:38,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 17:18:38,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 17:18:38,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 17:18:38,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 17:18:38,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 17:18:38,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 17:18:38,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 17:18:38,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 17:18:38,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 17:18:38,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 17:18:38,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 17:18:38,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 17:18:38,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 17:18:38,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 17:18:38,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 17:18:38,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 17:18:38,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 17:18:38,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 17:18:38,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 17:18:38,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 17:18:38,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 17:18:38,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 17:18:38,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 17:18:38,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 17:18:38,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 17:18:38,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 17:18:38,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 17:18:38,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 17:18:38,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 17:18:38,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 17:18:38,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 17:18:38,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 17:18:38,530 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 17:18:38,544 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 17:18:38,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 17:18:38,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 17:18:38,547 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 17:18:38,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 17:18:38,548 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 17:18:38,548 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 17:18:38,549 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 17:18:38,549 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 17:18:38,549 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 17:18:38,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 17:18:38,550 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 17:18:38,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 17:18:38,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 17:18:38,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 17:18:38,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 17:18:38,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 17:18:38,551 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 17:18:38,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 17:18:38,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 17:18:38,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 17:18:38,552 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 17:18:38,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 17:18:38,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 17:18:38,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 17:18:38,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 17:18:38,554 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 17:18:38,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 17:18:38,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 17:18:38,554 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 17:18:38,604 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 17:18:38,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 17:18:38,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 17:18:38,623 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 17:18:38,624 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 17:18:38,624 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27.c [2019-09-09 17:18:38,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eefc8177b/868bc382144b4b5fa950eafcf49bc8d6/FLAG7ff0e7b52 [2019-09-09 17:18:39,507 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 17:18:39,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label27.c [2019-09-09 17:18:39,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eefc8177b/868bc382144b4b5fa950eafcf49bc8d6/FLAG7ff0e7b52 [2019-09-09 17:18:40,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eefc8177b/868bc382144b4b5fa950eafcf49bc8d6 [2019-09-09 17:18:40,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 17:18:40,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 17:18:40,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 17:18:40,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 17:18:40,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 17:18:40,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:18:40" (1/1) ... [2019-09-09 17:18:40,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f9c9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:40, skipping insertion in model container [2019-09-09 17:18:40,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:18:40" (1/1) ... [2019-09-09 17:18:40,060 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 17:18:40,251 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 17:18:41,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 17:18:41,861 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 17:18:42,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 17:18:42,645 INFO L192 MainTranslator]: Completed translation [2019-09-09 17:18:42,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:42 WrapperNode [2019-09-09 17:18:42,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 17:18:42,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 17:18:42,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 17:18:42,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 17:18:42,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:42" (1/1) ... [2019-09-09 17:18:42,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:42" (1/1) ... [2019-09-09 17:18:42,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:42" (1/1) ... [2019-09-09 17:18:42,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:42" (1/1) ... [2019-09-09 17:18:42,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:42" (1/1) ... [2019-09-09 17:18:42,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:42" (1/1) ... [2019-09-09 17:18:42,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:42" (1/1) ... [2019-09-09 17:18:42,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 17:18:42,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 17:18:42,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 17:18:42,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 17:18:42,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:42" (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 17:18:43,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 17:18:43,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 17:18:43,041 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 17:18:43,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 17:18:43,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 17:18:43,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 17:18:43,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 17:18:43,042 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 17:18:43,042 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 17:18:43,043 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 17:18:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 17:18:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 17:18:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 17:18:43,046 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 17:18:43,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 17:18:43,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 17:18:43,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 17:18:49,675 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 17:18:49,676 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 17:18:49,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:18:49 BoogieIcfgContainer [2019-09-09 17:18:49,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 17:18:49,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 17:18:49,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 17:18:49,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 17:18:49,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:18:40" (1/3) ... [2019-09-09 17:18:49,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4aa52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:18:49, skipping insertion in model container [2019-09-09 17:18:49,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:42" (2/3) ... [2019-09-09 17:18:49,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4aa52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:18:49, skipping insertion in model container [2019-09-09 17:18:49,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:18:49" (3/3) ... [2019-09-09 17:18:49,693 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label27.c [2019-09-09 17:18:49,708 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 17:18:49,721 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 17:18:49,739 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 17:18:49,767 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 17:18:49,767 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 17:18:49,767 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 17:18:49,767 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 17:18:49,767 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 17:18:49,768 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 17:18:49,768 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 17:18:49,768 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 17:18:49,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-09 17:18:49,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-09 17:18:49,833 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:18:49,834 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, 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 17:18:49,836 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:18:49,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:18:49,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1839105400, now seen corresponding path program 1 times [2019-09-09 17:18:49,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:18:49,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:18:49,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:18:49,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:18:49,901 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:18:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:18:50,238 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 17:18:50,240 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:18:50,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 17:18:50,240 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:18:50,246 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 17:18:50,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 17:18:50,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 17:18:50,264 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 3 states. [2019-09-09 17:18:56,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:18:56,288 INFO L93 Difference]: Finished difference Result 1988 states and 3495 transitions. [2019-09-09 17:18:56,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 17:18:56,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2019-09-09 17:18:56,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:18:56,334 INFO L225 Difference]: With dead ends: 1988 [2019-09-09 17:18:56,334 INFO L226 Difference]: Without dead ends: 1920 [2019-09-09 17:18:56,336 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 17:18:56,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2019-09-09 17:18:56,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1903. [2019-09-09 17:18:56,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1903 states. [2019-09-09 17:18:56,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 3344 transitions. [2019-09-09 17:18:56,485 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 3344 transitions. Word has length 51 [2019-09-09 17:18:56,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:18:56,487 INFO L475 AbstractCegarLoop]: Abstraction has 1903 states and 3344 transitions. [2019-09-09 17:18:56,488 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 17:18:56,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 3344 transitions. [2019-09-09 17:18:56,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-09-09 17:18:56,500 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:18:56,501 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:18:56,501 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:18:56,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:18:56,502 INFO L82 PathProgramCache]: Analyzing trace with hash -25289727, now seen corresponding path program 1 times [2019-09-09 17:18:56,502 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:18:56,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:18:56,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:18:56,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:18:56,504 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:18:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:18:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:18:56,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:18:56,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 17:18:56,724 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:18:56,725 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 17:18:56,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 17:18:56,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 17:18:56,726 INFO L87 Difference]: Start difference. First operand 1903 states and 3344 transitions. Second operand 5 states. [2019-09-09 17:19:04,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:19:04,430 INFO L93 Difference]: Finished difference Result 3620 states and 5742 transitions. [2019-09-09 17:19:04,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 17:19:04,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2019-09-09 17:19:04,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:19:04,453 INFO L225 Difference]: With dead ends: 3620 [2019-09-09 17:19:04,454 INFO L226 Difference]: Without dead ends: 3620 [2019-09-09 17:19:04,455 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 17:19:04,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2019-09-09 17:19:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3590. [2019-09-09 17:19:04,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3590 states. [2019-09-09 17:19:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 5678 transitions. [2019-09-09 17:19:04,556 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 5678 transitions. Word has length 120 [2019-09-09 17:19:04,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:19:04,557 INFO L475 AbstractCegarLoop]: Abstraction has 3590 states and 5678 transitions. [2019-09-09 17:19:04,557 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 17:19:04,557 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 5678 transitions. [2019-09-09 17:19:04,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-09-09 17:19:04,560 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:19:04,560 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:19:04,560 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:19:04,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:19:04,561 INFO L82 PathProgramCache]: Analyzing trace with hash -821167643, now seen corresponding path program 1 times [2019-09-09 17:19:04,561 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:19:04,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:19:04,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:19:04,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:19:04,563 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:19:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:19:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:19:04,746 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:19:04,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 17:19:04,746 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:19:04,749 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 17:19:04,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 17:19:04,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 17:19:04,751 INFO L87 Difference]: Start difference. First operand 3590 states and 5678 transitions. Second operand 5 states. [2019-09-09 17:19:14,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:19:14,009 INFO L93 Difference]: Finished difference Result 7200 states and 10682 transitions. [2019-09-09 17:19:14,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 17:19:14,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2019-09-09 17:19:14,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:19:14,055 INFO L225 Difference]: With dead ends: 7200 [2019-09-09 17:19:14,055 INFO L226 Difference]: Without dead ends: 7200 [2019-09-09 17:19:14,064 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 17:19:14,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7200 states. [2019-09-09 17:19:14,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7200 to 7049. [2019-09-09 17:19:14,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7049 states. [2019-09-09 17:19:14,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7049 states to 7049 states and 10340 transitions. [2019-09-09 17:19:14,291 INFO L78 Accepts]: Start accepts. Automaton has 7049 states and 10340 transitions. Word has length 122 [2019-09-09 17:19:14,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:19:14,293 INFO L475 AbstractCegarLoop]: Abstraction has 7049 states and 10340 transitions. [2019-09-09 17:19:14,293 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 17:19:14,294 INFO L276 IsEmpty]: Start isEmpty. Operand 7049 states and 10340 transitions. [2019-09-09 17:19:14,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-09 17:19:14,296 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:19:14,296 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:19:14,296 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:19:14,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:19:14,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1162882097, now seen corresponding path program 1 times [2019-09-09 17:19:14,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:19:14,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:19:14,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:19:14,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:19:14,298 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:19:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:19:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-09 17:19:14,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 17:19:14,497 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 17:19:14,498 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 145 with the following transitions: [2019-09-09 17:19:14,500 INFO L207 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2943], [2945], [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 17:19:14,546 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 17:19:14,546 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 17:19:46,920 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 17:19:46,922 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 17:19:46,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:19:46,927 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 17:20:14,146 INFO L227 lantSequenceWeakener]: Weakened 138 states. On average, predicates are now at 71.53% of their original sizes. [2019-09-09 17:20:14,146 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 17:20:14,183 INFO L420 sIntCurrentIteration]: We unified 143 AI predicates to 143 [2019-09-09 17:20:14,184 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 17:20:14,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 17:20:14,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2019-09-09 17:20:14,185 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:20:14,185 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-09 17:20:14,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-09 17:20:14,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-09 17:20:14,186 INFO L87 Difference]: Start difference. First operand 7049 states and 10340 transitions. Second operand 7 states. [2019-09-09 17:22:04,458 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.