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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 19:06:19,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 19:06:19,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 19:06:19,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 19:06:19,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 19:06:19,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 19:06:19,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 19:06:19,391 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 19:06:19,406 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 19:06:19,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 19:06:19,407 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 19:06:19,407 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 19:06:19,408 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 19:06:19,408 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 19:06:19,408 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 19:06:19,408 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 19:06:19,408 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 19:06:19,409 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 19:06:19,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 19:06:19,409 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 19:06:19,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 19:06:19,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 19:06:19,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 19:06:19,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 19:06:19,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 19:06:19,410 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 19:06:19,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 19:06:19,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 19:06:19,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 19:06:19,411 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 19:06:19,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 19:06:19,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 19:06:19,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 19:06:19,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 19:06:19,412 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 19:06:19,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 19:06:19,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 19:06:19,413 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 19:06:19,444 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 19:06:19,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 19:06:19,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 19:06:19,467 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 19:06:19,467 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 19:06:19,468 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2019-10-02 19:06:19,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/359f0d922/8b1b6f6070f44dd7b8007deb653f7d6f/FLAGebdae45c5 [2019-10-02 19:06:20,075 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 19:06:20,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2019-10-02 19:06:20,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/359f0d922/8b1b6f6070f44dd7b8007deb653f7d6f/FLAGebdae45c5 [2019-10-02 19:06:20,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/359f0d922/8b1b6f6070f44dd7b8007deb653f7d6f [2019-10-02 19:06:20,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 19:06:20,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 19:06:20,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 19:06:20,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 19:06:20,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 19:06:20,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 07:06:20" (1/1) ... [2019-10-02 19:06:20,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5f6572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:06:20, skipping insertion in model container [2019-10-02 19:06:20,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 07:06:20" (1/1) ... [2019-10-02 19:06:20,366 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 19:06:20,436 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 19:06:21,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 19:06:21,018 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 19:06:21,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 19:06:21,180 INFO L192 MainTranslator]: Completed translation [2019-10-02 19:06:21,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:06:21 WrapperNode [2019-10-02 19:06:21,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 19:06:21,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 19:06:21,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 19:06:21,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 19:06:21,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:06:21" (1/1) ... [2019-10-02 19:06:21,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:06:21" (1/1) ... [2019-10-02 19:06:21,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:06:21" (1/1) ... [2019-10-02 19:06:21,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:06:21" (1/1) ... [2019-10-02 19:06:21,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:06:21" (1/1) ... [2019-10-02 19:06:21,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:06:21" (1/1) ... [2019-10-02 19:06:21,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:06:21" (1/1) ... [2019-10-02 19:06:21,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 19:06:21,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 19:06:21,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 19:06:21,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 19:06:21,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:06:21" (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 19:06:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 19:06:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 19:06:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 19:06:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 19:06:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 19:06:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 19:06:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 19:06:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 19:06:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 19:06:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 19:06:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 19:06:22,681 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 19:06:22,681 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 19:06:22,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 07:06:22 BoogieIcfgContainer [2019-10-02 19:06:22,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 19:06:22,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 19:06:22,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 19:06:22,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 19:06:22,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 07:06:20" (1/3) ... [2019-10-02 19:06:22,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391ce196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 07:06:22, skipping insertion in model container [2019-10-02 19:06:22,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:06:21" (2/3) ... [2019-10-02 19:06:22,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391ce196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 07:06:22, skipping insertion in model container [2019-10-02 19:06:22,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 07:06:22" (3/3) ... [2019-10-02 19:06:22,692 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label43.c [2019-10-02 19:06:22,703 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 19:06:22,713 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 19:06:22,731 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 19:06:22,764 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 19:06:22,765 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 19:06:22,766 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 19:06:22,766 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 19:06:22,766 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 19:06:22,766 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 19:06:22,767 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 19:06:22,767 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 19:06:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-10-02 19:06:22,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-02 19:06:22,813 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:06:22,815 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] [2019-10-02 19:06:22,816 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:06:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:06:22,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1136502142, now seen corresponding path program 1 times [2019-10-02 19:06:22,825 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:06:22,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:06:22,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:06:22,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:06:22,881 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:06:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:06:23,135 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 19:06:23,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:06:23,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 19:06:23,138 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:06:23,146 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 19:06:23,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 19:06:23,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 19:06:23,165 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2019-10-02 19:06:24,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:06:24,246 INFO L93 Difference]: Finished difference Result 362 states and 538 transitions. [2019-10-02 19:06:24,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 19:06:24,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-10-02 19:06:24,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:06:24,272 INFO L225 Difference]: With dead ends: 362 [2019-10-02 19:06:24,273 INFO L226 Difference]: Without dead ends: 294 [2019-10-02 19:06:24,276 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 19:06:24,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-10-02 19:06:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2019-10-02 19:06:24,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-10-02 19:06:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 421 transitions. [2019-10-02 19:06:24,371 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 421 transitions. Word has length 41 [2019-10-02 19:06:24,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:06:24,372 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 421 transitions. [2019-10-02 19:06:24,372 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 19:06:24,372 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 421 transitions. [2019-10-02 19:06:24,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-02 19:06:24,377 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:06:24,378 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:24,378 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:06:24,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:06:24,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1617063693, now seen corresponding path program 1 times [2019-10-02 19:06:24,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:06:24,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:06:24,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:06:24,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:06:24,381 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:06:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:06:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:06:24,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:06:24,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 19:06:24,609 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:06:24,611 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 19:06:24,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 19:06:24,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 19:06:24,613 INFO L87 Difference]: Start difference. First operand 294 states and 421 transitions. Second operand 6 states. [2019-10-02 19:06:25,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:06:25,626 INFO L93 Difference]: Finished difference Result 453 states and 620 transitions. [2019-10-02 19:06:25,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 19:06:25,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2019-10-02 19:06:25,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:06:25,632 INFO L225 Difference]: With dead ends: 453 [2019-10-02 19:06:25,632 INFO L226 Difference]: Without dead ends: 453 [2019-10-02 19:06:25,633 INFO L640 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 [2019-10-02 19:06:25,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2019-10-02 19:06:25,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 445. [2019-10-02 19:06:25,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-10-02 19:06:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 606 transitions. [2019-10-02 19:06:25,674 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 606 transitions. Word has length 110 [2019-10-02 19:06:25,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:06:25,675 INFO L475 AbstractCegarLoop]: Abstraction has 445 states and 606 transitions. [2019-10-02 19:06:25,675 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 19:06:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 606 transitions. [2019-10-02 19:06:25,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-02 19:06:25,679 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:06:25,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:25,680 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:06:25,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:06:25,683 INFO L82 PathProgramCache]: Analyzing trace with hash -430353343, now seen corresponding path program 1 times [2019-10-02 19:06:25,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:06:25,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:06:25,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:06:25,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:06:25,685 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:06:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:06:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:06:25,936 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 19:06:25,936 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 19:06:25,937 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 121 with the following transitions: [2019-10-02 19:06:25,940 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], [237], [239], [242], [250], [258], [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], [534], [792], [796], [805], [809], [811], [816], [817], [818], [820], [821] [2019-10-02 19:06:25,986 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 19:06:25,986 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 19:06:37,888 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-02 19:06:49,682 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 19:06:49,685 INFO L272 AbstractInterpreter]: Visited 86 different actions 165 times. Merged at 3 different actions 3 times. Never widened. Performed 299 root evaluator evaluations with a maximum evaluation depth of 16. Performed 299 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2019-10-02 19:06:49,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:06:49,690 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 19:07:00,059 INFO L227 lantSequenceWeakener]: Weakened 117 states. On average, predicates are now at 73.42% of their original sizes. [2019-10-02 19:07:00,060 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 19:07:00,155 INFO L420 sIntCurrentIteration]: We unified 119 AI predicates to 119 [2019-10-02 19:07:00,155 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 19:07:00,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 19:07:00,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2019-10-02 19:07:00,157 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:07:00,157 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 19:07:00,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 19:07:00,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-02 19:07:00,158 INFO L87 Difference]: Start difference. First operand 445 states and 606 transitions. Second operand 11 states. [2019-10-02 19:10:29,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:10:29,600 INFO L93 Difference]: Finished difference Result 755 states and 935 transitions. [2019-10-02 19:10:29,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-02 19:10:29,601 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 120 [2019-10-02 19:10:29,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:10:29,606 INFO L225 Difference]: With dead ends: 755 [2019-10-02 19:10:29,606 INFO L226 Difference]: Without dead ends: 755 [2019-10-02 19:10:29,607 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2019-10-02 19:10:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2019-10-02 19:10:29,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 588. [2019-10-02 19:10:29,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-10-02 19:10:29,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 756 transitions. [2019-10-02 19:10:29,634 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 756 transitions. Word has length 120 [2019-10-02 19:10:29,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:10:29,635 INFO L475 AbstractCegarLoop]: Abstraction has 588 states and 756 transitions. [2019-10-02 19:10:29,635 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-02 19:10:29,635 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 756 transitions. [2019-10-02 19:10:29,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-02 19:10:29,638 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:10:29,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:29,639 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:10:29,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:10:29,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1443476535, now seen corresponding path program 1 times [2019-10-02 19:10:29,640 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:10:29,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:10:29,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:10:29,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:10:29,642 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:10:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:10:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-02 19:10:29,796 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 19:10:29,796 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 19:10:29,797 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 157 with the following transitions: [2019-10-02 19:10:29,797 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], [237], [239], [242], [250], [258], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [805], [809], [811], [816], [817], [818], [820], [821] [2019-10-02 19:10:29,803 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 19:10:29,804 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 19:11:01,059 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-02 19:11:59,913 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 19:11:59,914 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 4 different actions 4 times. Never widened. Performed 461 root evaluator evaluations with a maximum evaluation depth of 16. Performed 461 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2019-10-02 19:11:59,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:11:59,914 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 19:12:47,481 INFO L227 lantSequenceWeakener]: Weakened 153 states. On average, predicates are now at 73.25% of their original sizes. [2019-10-02 19:12:47,482 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 19:12:47,582 INFO L420 sIntCurrentIteration]: We unified 155 AI predicates to 155 [2019-10-02 19:12:47,582 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 19:12:47,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 19:12:47,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2019-10-02 19:12:47,583 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:12:47,583 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-02 19:12:47,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-02 19:12:47,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-10-02 19:12:47,584 INFO L87 Difference]: Start difference. First operand 588 states and 756 transitions. Second operand 12 states.