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/Problem10_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 14:09:08,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 14:09:08,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 14:09:08,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 14:09:08,480 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 14:09:08,504 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 14:09:08,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 14:09:08,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 14:09:08,506 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 14:09:08,507 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 14:09:08,507 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 14:09:08,507 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 14:09:08,507 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 14:09:08,507 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 14:09:08,508 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 14:09:08,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 14:09:08,510 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 14:09:08,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 14:09:08,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 14:09:08,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 14:09:08,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 14:09:08,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 14:09:08,512 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 14:09:08,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 14:09:08,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 14:09:08,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 14:09:08,512 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 14:09:08,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 14:09:08,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 14:09:08,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 14:09:08,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 14:09:08,514 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 14:09:08,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 14:09:08,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 14:09:08,514 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 14:09:08,566 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 14:09:08,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 14:09:08,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 14:09:08,584 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 14:09:08,584 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 14:09:08,585 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2019-09-09 14:09:08,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c51eef7d/858c0a4a807943d1aa20fe0e9f1c5104/FLAG1ee46dd0b [2019-09-09 14:09:09,184 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 14:09:09,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2019-09-09 14:09:09,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c51eef7d/858c0a4a807943d1aa20fe0e9f1c5104/FLAG1ee46dd0b [2019-09-09 14:09:09,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c51eef7d/858c0a4a807943d1aa20fe0e9f1c5104 [2019-09-09 14:09:09,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 14:09:09,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 14:09:09,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 14:09:09,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 14:09:09,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 14:09:09,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:09:09" (1/1) ... [2019-09-09 14:09:09,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a2301ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:09, skipping insertion in model container [2019-09-09 14:09:09,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:09:09" (1/1) ... [2019-09-09 14:09:09,447 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 14:09:09,512 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 14:09:10,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:09:10,021 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 14:09:10,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:09:10,135 INFO L192 MainTranslator]: Completed translation [2019-09-09 14:09:10,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:10 WrapperNode [2019-09-09 14:09:10,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 14:09:10,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 14:09:10,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 14:09:10,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 14:09:10,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:10" (1/1) ... [2019-09-09 14:09:10,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:10" (1/1) ... [2019-09-09 14:09:10,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:10" (1/1) ... [2019-09-09 14:09:10,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:10" (1/1) ... [2019-09-09 14:09:10,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:10" (1/1) ... [2019-09-09 14:09:10,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:10" (1/1) ... [2019-09-09 14:09:10,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:10" (1/1) ... [2019-09-09 14:09:10,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 14:09:10,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 14:09:10,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 14:09:10,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 14:09:10,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:10" (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 14:09:10,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 14:09:10,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 14:09:10,324 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 14:09:10,325 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 14:09:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 14:09:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 14:09:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 14:09:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 14:09:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 14:09:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 14:09:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 14:09:11,661 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 14:09:11,662 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 14:09:11,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:09:11 BoogieIcfgContainer [2019-09-09 14:09:11,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 14:09:11,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 14:09:11,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 14:09:11,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 14:09:11,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 02:09:09" (1/3) ... [2019-09-09 14:09:11,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748e220c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:09:11, skipping insertion in model container [2019-09-09 14:09:11,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:10" (2/3) ... [2019-09-09 14:09:11,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748e220c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:09:11, skipping insertion in model container [2019-09-09 14:09:11,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:09:11" (3/3) ... [2019-09-09 14:09:11,686 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label08.c [2019-09-09 14:09:11,700 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 14:09:11,709 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 14:09:11,726 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 14:09:11,757 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 14:09:11,759 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 14:09:11,759 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 14:09:11,759 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 14:09:11,759 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 14:09:11,760 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 14:09:11,760 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 14:09:11,760 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 14:09:11,798 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-09-09 14:09:11,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-09 14:09:11,813 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:09:11,815 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] [2019-09-09 14:09:11,817 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:09:11,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:09:11,824 INFO L82 PathProgramCache]: Analyzing trace with hash -464539961, now seen corresponding path program 1 times [2019-09-09 14:09:11,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:09:11,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:09:11,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:09:11,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:09:11,869 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:09:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:09:12,150 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 14:09:12,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:09:12,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 14:09:12,154 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:09:12,162 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 14:09:12,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 14:09:12,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 14:09:12,182 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2019-09-09 14:09:13,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:09:13,274 INFO L93 Difference]: Finished difference Result 362 states and 558 transitions. [2019-09-09 14:09:13,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 14:09:13,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-09-09 14:09:13,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:09:13,293 INFO L225 Difference]: With dead ends: 362 [2019-09-09 14:09:13,293 INFO L226 Difference]: Without dead ends: 294 [2019-09-09 14:09:13,295 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 14:09:13,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-09-09 14:09:13,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2019-09-09 14:09:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-09-09 14:09:13,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 441 transitions. [2019-09-09 14:09:13,374 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 441 transitions. Word has length 46 [2019-09-09 14:09:13,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:09:13,374 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 441 transitions. [2019-09-09 14:09:13,374 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 14:09:13,375 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 441 transitions. [2019-09-09 14:09:13,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-09 14:09:13,380 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:09:13,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:13,381 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:09:13,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:09:13,381 INFO L82 PathProgramCache]: Analyzing trace with hash 2020042122, now seen corresponding path program 1 times [2019-09-09 14:09:13,382 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:09:13,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:09:13,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:09:13,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:09:13,383 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:09:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:09:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-09 14:09:13,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 14:09:13,592 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 14:09:13,595 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 117 with the following transitions: [2019-09-09 14:09:13,597 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [792], [796], [805], [809], [811], [816], [817], [818], [820], [821] [2019-09-09 14:09:13,649 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 14:09:13,650 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 14:09:17,985 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 14:09:24,639 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 14:09:24,642 INFO L272 AbstractInterpreter]: Visited 77 different actions 148 times. Merged at 4 different actions 4 times. Never widened. Performed 326 root evaluator evaluations with a maximum evaluation depth of 12. Performed 326 inverse root evaluator evaluations with a maximum inverse evaluation depth of 12. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2019-09-09 14:09:24,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:09:24,646 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 14:09:32,393 INFO L227 lantSequenceWeakener]: Weakened 113 states. On average, predicates are now at 73.64% of their original sizes. [2019-09-09 14:09:32,393 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 14:09:32,473 INFO L420 sIntCurrentIteration]: We unified 115 AI predicates to 115 [2019-09-09 14:09:32,473 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 14:09:32,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 14:09:32,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2019-09-09 14:09:32,475 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:09:32,478 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 14:09:32,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 14:09:32,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-09 14:09:32,479 INFO L87 Difference]: Start difference. First operand 294 states and 441 transitions. Second operand 10 states. [2019-09-09 14:17:08,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:17:08,972 INFO L93 Difference]: Finished difference Result 584 states and 750 transitions. [2019-09-09 14:17:08,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-09 14:17:08,972 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 116 [2019-09-09 14:17:08,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:17:08,978 INFO L225 Difference]: With dead ends: 584 [2019-09-09 14:17:08,978 INFO L226 Difference]: Without dead ends: 584 [2019-09-09 14:17:08,979 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2019-09-09 14:17:08,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2019-09-09 14:17:09,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 582. [2019-09-09 14:17:09,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2019-09-09 14:17:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 748 transitions. [2019-09-09 14:17:09,019 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 748 transitions. Word has length 116 [2019-09-09 14:17:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:17:09,020 INFO L475 AbstractCegarLoop]: Abstraction has 582 states and 748 transitions. [2019-09-09 14:17:09,020 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-09 14:17:09,020 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 748 transitions. [2019-09-09 14:17:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-09-09 14:17:09,025 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:17:09,026 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 14:17:09,026 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:17:09,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:17:09,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1202446762, now seen corresponding path program 1 times [2019-09-09 14:17:09,027 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:17:09,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:17:09,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:17:09,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:17:09,029 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:17:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:17:09,238 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-09-09 14:17:09,239 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 14:17:09,243 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 14:17:09,243 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 192 with the following transitions: [2019-09-09 14:17:09,244 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [518], [792], [796], [805], [809], [811], [816], [817], [818], [820], [821] [2019-09-09 14:17:09,256 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 14:17:09,264 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 14:17:11,916 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 14:17:47,250 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 14:17:47,250 INFO L272 AbstractInterpreter]: Visited 83 different actions 241 times. Merged at 6 different actions 12 times. Never widened. Performed 580 root evaluator evaluations with a maximum evaluation depth of 16. Performed 580 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2019-09-09 14:17:47,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:17:47,251 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 14:18:05,925 INFO L227 lantSequenceWeakener]: Weakened 188 states. On average, predicates are now at 73.31% of their original sizes. [2019-09-09 14:18:05,926 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 14:18:06,000 INFO L420 sIntCurrentIteration]: We unified 190 AI predicates to 190 [2019-09-09 14:18:06,000 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 14:18:06,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 14:18:06,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2019-09-09 14:18:06,001 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:18:06,002 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 14:18:06,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 14:18:06,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-09 14:18:06,003 INFO L87 Difference]: Start difference. First operand 582 states and 748 transitions. Second operand 10 states. [2019-09-09 14:22:27,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:22:27,826 INFO L93 Difference]: Finished difference Result 737 states and 919 transitions. [2019-09-09 14:22:27,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-09 14:22:27,826 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 191 [2019-09-09 14:22:27,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:22:27,832 INFO L225 Difference]: With dead ends: 737 [2019-09-09 14:22:27,832 INFO L226 Difference]: Without dead ends: 737 [2019-09-09 14:22:27,833 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2019-09-09 14:22:27,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2019-09-09 14:22:27,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 727. [2019-09-09 14:22:27,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2019-09-09 14:22:27,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 907 transitions. [2019-09-09 14:22:27,874 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 907 transitions. Word has length 191 [2019-09-09 14:22:27,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:22:27,875 INFO L475 AbstractCegarLoop]: Abstraction has 727 states and 907 transitions. [2019-09-09 14:22:27,875 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-09 14:22:27,875 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 907 transitions. [2019-09-09 14:22:27,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-09-09 14:22:27,880 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:22:27,880 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 14:22:27,880 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:22:27,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:22:27,881 INFO L82 PathProgramCache]: Analyzing trace with hash 2014705075, now seen corresponding path program 1 times [2019-09-09 14:22:27,881 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:22:27,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:22:27,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:22:27,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:22:27,883 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:22:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:22:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 14:22:28,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 14:22:28,044 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 14:22:28,045 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2019-09-09 14:22:28,045 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [534], [792], [796], [805], [809], [811], [816], [817], [818], [820], [821] [2019-09-09 14:22:28,048 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 14:22:28,049 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 14:22:38,630 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 14:22:50,095 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 14:22:50,095 INFO L272 AbstractInterpreter]: Visited 87 different actions 167 times. Merged at 3 different actions 3 times. Never widened. Performed 301 root evaluator evaluations with a maximum evaluation depth of 16. Performed 301 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2019-09-09 14:22:50,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:22:50,096 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 14:23:07,321 INFO L227 lantSequenceWeakener]: Weakened 195 states. On average, predicates are now at 73.29% of their original sizes. [2019-09-09 14:23:07,321 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 14:23:07,403 INFO L420 sIntCurrentIteration]: We unified 197 AI predicates to 197 [2019-09-09 14:23:07,404 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 14:23:07,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 14:23:07,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2019-09-09 14:23:07,404 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:23:07,405 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-09 14:23:07,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-09 14:23:07,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-09-09 14:23:07,406 INFO L87 Difference]: Start difference. First operand 727 states and 907 transitions. Second operand 11 states.