java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 19:34:07,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 19:34:07,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 19:34:07,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 19:34:07,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 19:34:07,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 19:34:07,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 19:34:07,214 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 [2019-10-02 19:34:07,230 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 19:34:07,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 19:34:07,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 19:34:07,231 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 19:34:07,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 19:34:07,232 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 19:34:07,232 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 19:34:07,232 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 19:34:07,232 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 19:34:07,232 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 19:34:07,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 19:34:07,233 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 19:34:07,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 19:34:07,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 19:34:07,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 19:34:07,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 19:34:07,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 19:34:07,235 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 19:34:07,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 19:34:07,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 19:34:07,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 19:34:07,236 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 19:34:07,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 19:34:07,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 19:34:07,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 19:34:07,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 19:34:07,237 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 19:34:07,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 19:34:07,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 19:34:07,237 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 19:34:07,267 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 19:34:07,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 19:34:07,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 19:34:07,286 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 19:34:07,286 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 19:34:07,287 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label17.c [2019-10-02 19:34:07,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24798a8d8/5702cfc258c24f31a1350bac25fcb566/FLAG3f1e3fc63 [2019-10-02 19:34:07,900 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 19:34:07,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label17.c [2019-10-02 19:34:07,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24798a8d8/5702cfc258c24f31a1350bac25fcb566/FLAG3f1e3fc63 [2019-10-02 19:34:08,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24798a8d8/5702cfc258c24f31a1350bac25fcb566 [2019-10-02 19:34:08,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 19:34:08,165 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 19:34:08,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 19:34:08,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 19:34:08,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 19:34:08,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 07:34:08" (1/1) ... [2019-10-02 19:34:08,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d0e25df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:34:08, skipping insertion in model container [2019-10-02 19:34:08,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 07:34:08" (1/1) ... [2019-10-02 19:34:08,186 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 19:34:08,262 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 19:34:08,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 19:34:08,968 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 19:34:09,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 19:34:09,269 INFO L192 MainTranslator]: Completed translation [2019-10-02 19:34:09,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:34:09 WrapperNode [2019-10-02 19:34:09,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 19:34:09,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 19:34:09,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 19:34:09,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 19:34:09,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:34:09" (1/1) ... [2019-10-02 19:34:09,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:34:09" (1/1) ... [2019-10-02 19:34:09,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:34:09" (1/1) ... [2019-10-02 19:34:09,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:34:09" (1/1) ... [2019-10-02 19:34:09,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:34:09" (1/1) ... [2019-10-02 19:34:09,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:34:09" (1/1) ... [2019-10-02 19:34:09,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:34:09" (1/1) ... [2019-10-02 19:34:09,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 19:34:09,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 19:34:09,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 19:34:09,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 19:34:09,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:34:09" (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 [2019-10-02 19:34:09,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 19:34:09,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 19:34:09,537 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 19:34:09,538 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 19:34:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 19:34:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 19:34:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 19:34:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 19:34:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 19:34:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 19:34:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 19:34:11,495 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 19:34:11,496 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 19:34:11,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 07:34:11 BoogieIcfgContainer [2019-10-02 19:34:11,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 19:34:11,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 19:34:11,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 19:34:11,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 19:34:11,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 07:34:08" (1/3) ... [2019-10-02 19:34:11,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3619114c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 07:34:11, skipping insertion in model container [2019-10-02 19:34:11,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:34:09" (2/3) ... [2019-10-02 19:34:11,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3619114c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 07:34:11, skipping insertion in model container [2019-10-02 19:34:11,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 07:34:11" (3/3) ... [2019-10-02 19:34:11,508 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label17.c [2019-10-02 19:34:11,521 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 19:34:11,530 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 19:34:11,552 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 19:34:11,581 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 19:34:11,581 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 19:34:11,581 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 19:34:11,581 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 19:34:11,582 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 19:34:11,582 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 19:34:11,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 19:34:11,582 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 19:34:11,608 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-02 19:34:11,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-02 19:34:11,620 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:34:11,621 INFO L411 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] [2019-10-02 19:34:11,623 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:34:11,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:34:11,630 INFO L82 PathProgramCache]: Analyzing trace with hash 2013037499, now seen corresponding path program 1 times [2019-10-02 19:34:11,633 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:34:11,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:34:11,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:34:11,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:34:11,693 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:34:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:34:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:34:12,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:34:12,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 19:34:12,040 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:34:12,046 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 19:34:12,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 19:34:12,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 19:34:12,065 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 3 states. [2019-10-02 19:34:13,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:34:13,540 INFO L93 Difference]: Finished difference Result 501 states and 809 transitions. [2019-10-02 19:34:13,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 19:34:13,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2019-10-02 19:34:13,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:34:13,562 INFO L225 Difference]: With dead ends: 501 [2019-10-02 19:34:13,562 INFO L226 Difference]: Without dead ends: 433 [2019-10-02 19:34:13,564 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 19:34:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2019-10-02 19:34:13,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 426. [2019-10-02 19:34:13,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-10-02 19:34:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 678 transitions. [2019-10-02 19:34:13,646 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 678 transitions. Word has length 44 [2019-10-02 19:34:13,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:34:13,647 INFO L475 AbstractCegarLoop]: Abstraction has 426 states and 678 transitions. [2019-10-02 19:34:13,647 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 19:34:13,647 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 678 transitions. [2019-10-02 19:34:13,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-02 19:34:13,653 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:34:13,653 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 19:34:13,654 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:34:13,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:34:13,654 INFO L82 PathProgramCache]: Analyzing trace with hash -697152023, now seen corresponding path program 1 times [2019-10-02 19:34:13,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:34:13,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:34:13,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:34:13,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:34:13,657 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:34:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:34:13,875 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:34:13,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:34:13,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 19:34:13,876 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:34:13,880 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 19:34:13,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 19:34:13,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 19:34:13,881 INFO L87 Difference]: Start difference. First operand 426 states and 678 transitions. Second operand 5 states. [2019-10-02 19:34:15,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:34:15,584 INFO L93 Difference]: Finished difference Result 839 states and 1214 transitions. [2019-10-02 19:34:15,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 19:34:15,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2019-10-02 19:34:15,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:34:15,592 INFO L225 Difference]: With dead ends: 839 [2019-10-02 19:34:15,592 INFO L226 Difference]: Without dead ends: 839 [2019-10-02 19:34:15,593 INFO L640 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 [2019-10-02 19:34:15,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2019-10-02 19:34:15,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 627. [2019-10-02 19:34:15,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2019-10-02 19:34:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 934 transitions. [2019-10-02 19:34:15,645 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 934 transitions. Word has length 119 [2019-10-02 19:34:15,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:34:15,646 INFO L475 AbstractCegarLoop]: Abstraction has 627 states and 934 transitions. [2019-10-02 19:34:15,646 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 19:34:15,647 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 934 transitions. [2019-10-02 19:34:15,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-02 19:34:15,652 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:34:15,654 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 19:34:15,654 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:34:15,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:34:15,654 INFO L82 PathProgramCache]: Analyzing trace with hash 716839870, now seen corresponding path program 1 times [2019-10-02 19:34:15,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:34:15,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:34:15,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:34:15,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:34:15,658 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:34:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:34:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:34:15,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:34:15,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 19:34:15,880 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:34:15,883 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 19:34:15,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 19:34:15,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 19:34:15,884 INFO L87 Difference]: Start difference. First operand 627 states and 934 transitions. Second operand 5 states. [2019-10-02 19:34:17,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:34:17,737 INFO L93 Difference]: Finished difference Result 1251 states and 1729 transitions. [2019-10-02 19:34:17,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 19:34:17,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2019-10-02 19:34:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:34:17,751 INFO L225 Difference]: With dead ends: 1251 [2019-10-02 19:34:17,751 INFO L226 Difference]: Without dead ends: 1251 [2019-10-02 19:34:17,752 INFO L640 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 [2019-10-02 19:34:17,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2019-10-02 19:34:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1032. [2019-10-02 19:34:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2019-10-02 19:34:17,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1433 transitions. [2019-10-02 19:34:17,799 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1433 transitions. Word has length 130 [2019-10-02 19:34:17,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:34:17,799 INFO L475 AbstractCegarLoop]: Abstraction has 1032 states and 1433 transitions. [2019-10-02 19:34:17,800 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 19:34:17,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1433 transitions. [2019-10-02 19:34:17,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-02 19:34:17,806 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:34:17,806 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 19:34:17,806 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:34:17,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:34:17,807 INFO L82 PathProgramCache]: Analyzing trace with hash -523045564, now seen corresponding path program 1 times [2019-10-02 19:34:17,807 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:34:17,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:34:17,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:34:17,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:34:17,809 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:34:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:34:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:34:18,171 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 19:34:18,171 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 19:34:18,172 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 176 with the following transitions: [2019-10-02 19:34:18,174 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], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1097], [1101], [1103], [1108], [1109], [1110], [1112], [1113] [2019-10-02 19:34:18,223 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 19:34:18,223 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 19:37:48,990 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-02 19:40:29,256 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 19:40:29,259 INFO L272 AbstractInterpreter]: Visited 138 different actions 271 times. Merged at 4 different actions 5 times. Never widened. Performed 651 root evaluator evaluations with a maximum evaluation depth of 17. Performed 651 inverse root evaluator evaluations with a maximum inverse evaluation depth of 17. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2019-10-02 19:40:29,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:40:29,264 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 19:42:42,250 INFO L227 lantSequenceWeakener]: Weakened 172 states. On average, predicates are now at 73.54% of their original sizes. [2019-10-02 19:42:42,251 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 19:42:42,388 INFO L420 sIntCurrentIteration]: We unified 174 AI predicates to 174 [2019-10-02 19:42:42,388 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 19:42:42,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 19:42:42,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 19 [2019-10-02 19:42:42,390 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:42:42,391 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-02 19:42:42,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-02 19:42:42,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-10-02 19:42:42,392 INFO L87 Difference]: Start difference. First operand 1032 states and 1433 transitions. Second operand 13 states.