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/Problem18_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 22:17:01,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 22:17:01,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 22:17:01,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 22:17:01,638 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 22:17:01,654 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 22:17:01,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 22:17:01,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 22:17:01,655 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 22:17:01,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 22:17:01,656 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 22:17:01,656 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 22:17:01,656 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 22:17:01,656 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 22:17:01,656 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 22:17:01,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 22:17:01,658 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 22:17:01,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 22:17:01,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 22:17:01,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 22:17:01,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 22:17:01,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 22:17:01,659 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 22:17:01,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 22:17:01,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 22:17:01,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 22:17:01,660 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 22:17:01,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 22:17:01,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 22:17:01,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 22:17:01,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 22:17:01,661 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 22:17:01,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 22:17:01,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 22:17:01,661 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 22:17:01,693 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 22:17:01,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 22:17:01,714 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 22:17:01,716 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 22:17:01,716 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 22:17:01,717 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label25.c [2019-09-09 22:17:01,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8908a563/b6c45541c19648cd98b56feb53092eaf/FLAG7cc6b5645 [2019-09-09 22:17:02,553 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 22:17:02,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label25.c [2019-09-09 22:17:02,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8908a563/b6c45541c19648cd98b56feb53092eaf/FLAG7cc6b5645 [2019-09-09 22:17:02,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8908a563/b6c45541c19648cd98b56feb53092eaf [2019-09-09 22:17:02,670 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 22:17:02,671 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 22:17:02,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 22:17:02,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 22:17:02,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 22:17:02,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 10:17:02" (1/1) ... [2019-09-09 22:17:02,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318a8aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:17:02, skipping insertion in model container [2019-09-09 22:17:02,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 10:17:02" (1/1) ... [2019-09-09 22:17:02,689 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 22:17:02,817 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 22:17:03,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 22:17:03,945 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 22:17:04,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 22:17:04,405 INFO L192 MainTranslator]: Completed translation [2019-09-09 22:17:04,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:17:04 WrapperNode [2019-09-09 22:17:04,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 22:17:04,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 22:17:04,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 22:17:04,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 22:17:04,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:17:04" (1/1) ... [2019-09-09 22:17:04,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:17:04" (1/1) ... [2019-09-09 22:17:04,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:17:04" (1/1) ... [2019-09-09 22:17:04,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:17:04" (1/1) ... [2019-09-09 22:17:04,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:17:04" (1/1) ... [2019-09-09 22:17:04,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:17:04" (1/1) ... [2019-09-09 22:17:04,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:17:04" (1/1) ... [2019-09-09 22:17:04,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 22:17:04,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 22:17:04,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 22:17:04,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 22:17:04,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:17:04" (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 22:17:04,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 22:17:04,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 22:17:04,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 22:17:04,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 22:17:04,889 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 22:17:04,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 22:17:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 22:17:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 22:17:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 22:17:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 22:17:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 22:17:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 22:17:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 22:17:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 22:17:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 22:17:08,691 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 22:17:08,691 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 22:17:08,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 10:17:08 BoogieIcfgContainer [2019-09-09 22:17:08,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 22:17:08,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 22:17:08,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 22:17:08,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 22:17:08,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 10:17:02" (1/3) ... [2019-09-09 22:17:08,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6ac10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 10:17:08, skipping insertion in model container [2019-09-09 22:17:08,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:17:04" (2/3) ... [2019-09-09 22:17:08,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6ac10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 10:17:08, skipping insertion in model container [2019-09-09 22:17:08,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 10:17:08" (3/3) ... [2019-09-09 22:17:08,714 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label25.c [2019-09-09 22:17:08,727 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 22:17:08,740 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 22:17:08,762 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 22:17:08,795 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 22:17:08,795 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 22:17:08,795 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 22:17:08,796 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 22:17:08,796 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 22:17:08,796 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 22:17:08,796 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 22:17:08,796 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 22:17:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-09-09 22:17:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-09 22:17:08,856 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:17:08,857 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] [2019-09-09 22:17:08,860 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:17:08,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:17:08,866 INFO L82 PathProgramCache]: Analyzing trace with hash 806765881, now seen corresponding path program 1 times [2019-09-09 22:17:08,868 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:17:08,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:17:08,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:17:08,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:17:08,918 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:17:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:17:09,125 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 22:17:09,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 22:17:09,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 22:17:09,129 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:17:09,135 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 22:17:09,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 22:17:09,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 22:17:09,155 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2019-09-09 22:17:16,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 22:17:16,368 INFO L93 Difference]: Finished difference Result 2202 states and 3268 transitions. [2019-09-09 22:17:16,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 22:17:16,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-09-09 22:17:16,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 22:17:16,404 INFO L225 Difference]: With dead ends: 2202 [2019-09-09 22:17:16,405 INFO L226 Difference]: Without dead ends: 2114 [2019-09-09 22:17:16,406 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 22:17:16,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2019-09-09 22:17:16,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 1412. [2019-09-09 22:17:16,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2019-09-09 22:17:16,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2246 transitions. [2019-09-09 22:17:16,557 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2246 transitions. Word has length 30 [2019-09-09 22:17:16,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 22:17:16,559 INFO L475 AbstractCegarLoop]: Abstraction has 1412 states and 2246 transitions. [2019-09-09 22:17:16,559 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 22:17:16,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2246 transitions. [2019-09-09 22:17:16,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-09 22:17:16,568 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:17:16,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:16,569 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:17:16,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:17:16,571 INFO L82 PathProgramCache]: Analyzing trace with hash -597433259, now seen corresponding path program 1 times [2019-09-09 22:17:16,572 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:17:16,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:17:16,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:17:16,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:17:16,575 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:17:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:17:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 22:17:16,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 22:17:16,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 22:17:16,817 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:17:16,819 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 22:17:16,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 22:17:16,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 22:17:16,820 INFO L87 Difference]: Start difference. First operand 1412 states and 2246 transitions. Second operand 5 states. [2019-09-09 22:17:23,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 22:17:23,025 INFO L93 Difference]: Finished difference Result 2888 states and 4349 transitions. [2019-09-09 22:17:23,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 22:17:23,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-09-09 22:17:23,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 22:17:23,043 INFO L225 Difference]: With dead ends: 2888 [2019-09-09 22:17:23,044 INFO L226 Difference]: Without dead ends: 2888 [2019-09-09 22:17:23,045 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 22:17:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2019-09-09 22:17:23,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2866. [2019-09-09 22:17:23,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2866 states. [2019-09-09 22:17:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4300 transitions. [2019-09-09 22:17:23,119 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4300 transitions. Word has length 99 [2019-09-09 22:17:23,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 22:17:23,120 INFO L475 AbstractCegarLoop]: Abstraction has 2866 states and 4300 transitions. [2019-09-09 22:17:23,120 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 22:17:23,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4300 transitions. [2019-09-09 22:17:23,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-09 22:17:23,122 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:17:23,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:23,123 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:17:23,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:17:23,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1545608973, now seen corresponding path program 1 times [2019-09-09 22:17:23,123 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:17:23,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:17:23,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:17:23,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:17:23,125 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:17:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:17:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 22:17:23,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 22:17:23,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 22:17:23,230 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:17:23,230 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 22:17:23,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 22:17:23,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 22:17:23,231 INFO L87 Difference]: Start difference. First operand 2866 states and 4300 transitions. Second operand 6 states. [2019-09-09 22:17:29,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 22:17:29,386 INFO L93 Difference]: Finished difference Result 5892 states and 8815 transitions. [2019-09-09 22:17:29,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 22:17:29,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2019-09-09 22:17:29,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 22:17:29,422 INFO L225 Difference]: With dead ends: 5892 [2019-09-09 22:17:29,423 INFO L226 Difference]: Without dead ends: 5892 [2019-09-09 22:17:29,423 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 22:17:29,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2019-09-09 22:17:29,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 5837. [2019-09-09 22:17:29,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5837 states. [2019-09-09 22:17:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5837 states to 5837 states and 8642 transitions. [2019-09-09 22:17:29,605 INFO L78 Accepts]: Start accepts. Automaton has 5837 states and 8642 transitions. Word has length 103 [2019-09-09 22:17:29,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 22:17:29,606 INFO L475 AbstractCegarLoop]: Abstraction has 5837 states and 8642 transitions. [2019-09-09 22:17:29,606 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 22:17:29,607 INFO L276 IsEmpty]: Start isEmpty. Operand 5837 states and 8642 transitions. [2019-09-09 22:17:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-09-09 22:17:29,613 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:17:29,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:29,614 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:17:29,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:17:29,614 INFO L82 PathProgramCache]: Analyzing trace with hash 830451652, now seen corresponding path program 1 times [2019-09-09 22:17:29,615 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:17:29,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:17:29,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:17:29,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:17:29,616 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:17:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:17:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 22:17:29,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 22:17:29,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 22:17:29,827 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:17:29,829 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 22:17:29,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 22:17:29,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 22:17:29,831 INFO L87 Difference]: Start difference. First operand 5837 states and 8642 transitions. Second operand 6 states. [2019-09-09 22:17:35,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 22:17:35,704 INFO L93 Difference]: Finished difference Result 8852 states and 12859 transitions. [2019-09-09 22:17:35,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 22:17:35,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2019-09-09 22:17:35,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 22:17:35,750 INFO L225 Difference]: With dead ends: 8852 [2019-09-09 22:17:35,751 INFO L226 Difference]: Without dead ends: 8852 [2019-09-09 22:17:35,752 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 22:17:35,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8852 states. [2019-09-09 22:17:35,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8852 to 8798. [2019-09-09 22:17:35,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8798 states. [2019-09-09 22:17:35,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8798 states to 8798 states and 12610 transitions. [2019-09-09 22:17:35,990 INFO L78 Accepts]: Start accepts. Automaton has 8798 states and 12610 transitions. Word has length 124 [2019-09-09 22:17:35,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 22:17:35,991 INFO L475 AbstractCegarLoop]: Abstraction has 8798 states and 12610 transitions. [2019-09-09 22:17:35,991 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 22:17:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 8798 states and 12610 transitions. [2019-09-09 22:17:35,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-09-09 22:17:35,995 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:17:35,995 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-09 22:17:35,996 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:17:35,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:17:35,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1767493658, now seen corresponding path program 1 times [2019-09-09 22:17:35,997 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:17:35,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:17:35,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:17:35,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:17:35,998 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:17:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:17:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 22:17:36,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 22:17:36,155 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 22:17:36,156 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2019-09-09 22:17:36,158 INFO L207 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1771], [1773], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2996], [3000], [3009], [3013], [3015], [3024], [3025], [3026], [3028], [3029] [2019-09-09 22:17:36,207 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 22:17:36,207 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 22:17:42,516 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 22:17:42,518 INFO L272 AbstractInterpreter]: Visited 111 different actions 111 times. Never merged. Never widened. Performed 261 root evaluator evaluations with a maximum evaluation depth of 13. Performed 261 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Never found a fixpoint. Largest state had 24 variables. [2019-09-09 22:17:42,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:17:42,523 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 22:17:49,332 INFO L227 lantSequenceWeakener]: Weakened 206 states. On average, predicates are now at 77.68% of their original sizes. [2019-09-09 22:17:49,333 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 22:17:49,405 INFO L420 sIntCurrentIteration]: We unified 224 AI predicates to 224 [2019-09-09 22:17:49,406 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 22:17:49,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 22:17:49,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-09-09 22:17:49,408 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:17:49,408 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 22:17:49,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 22:17:49,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-09 22:17:49,409 INFO L87 Difference]: Start difference. First operand 8798 states and 12610 transitions. Second operand 10 states. [2019-09-09 22:19:44,528 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.