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/Problem01_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:45:29,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:45:29,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:45:29,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 16:45:29,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:45:29,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:45:29,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:45:29,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:45:29,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:45:29,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:45:29,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:45:29,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:45:29,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:45:29,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:45:29,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:45:29,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:45:29,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:45:29,600 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 16:45:29,615 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:45:29,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:45:29,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:45:29,616 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:45:29,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:45:29,617 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:45:29,617 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:45:29,618 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:45:29,618 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:45:29,618 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:45:29,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:45:29,619 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:45:29,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:45:29,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:45:29,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:45:29,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:45:29,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:45:29,620 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:45:29,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:45:29,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:45:29,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:45:29,621 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:45:29,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:45:29,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:45:29,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:45:29,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:45:29,622 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:45:29,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:45:29,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:45:29,623 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:45:29,652 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:45:29,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:45:29,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:45:29,673 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:45:29,673 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:45:29,675 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label29.c [2019-10-02 16:45:29,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0fb3f7f2/c6c10256492345628c4798a26508dc58/FLAG810577cc8 [2019-10-02 16:45:30,295 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:45:30,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label29.c [2019-10-02 16:45:30,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0fb3f7f2/c6c10256492345628c4798a26508dc58/FLAG810577cc8 [2019-10-02 16:45:30,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0fb3f7f2/c6c10256492345628c4798a26508dc58 [2019-10-02 16:45:30,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:45:30,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:45:30,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:45:30,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:45:30,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:45:30,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:45:30" (1/1) ... [2019-10-02 16:45:30,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@774ea263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:30, skipping insertion in model container [2019-10-02 16:45:30,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:45:30" (1/1) ... [2019-10-02 16:45:30,631 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:45:30,684 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:45:31,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:45:31,281 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:45:31,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:45:31,485 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:45:31,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:31 WrapperNode [2019-10-02 16:45:31,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:45:31,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:45:31,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:45:31,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:45:31,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:31" (1/1) ... [2019-10-02 16:45:31,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:31" (1/1) ... [2019-10-02 16:45:31,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:31" (1/1) ... [2019-10-02 16:45:31,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:31" (1/1) ... [2019-10-02 16:45:31,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:31" (1/1) ... [2019-10-02 16:45:31,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:31" (1/1) ... [2019-10-02 16:45:31,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:31" (1/1) ... [2019-10-02 16:45:31,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:45:31,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:45:31,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:45:31,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:45:31,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:31" (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 16:45:31,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:45:31,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:45:31,754 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 16:45:31,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:45:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 16:45:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:45:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:45:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 16:45:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:45:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:45:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:45:33,310 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:45:33,311 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 16:45:33,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:45:33 BoogieIcfgContainer [2019-10-02 16:45:33,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:45:33,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:45:33,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:45:33,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:45:33,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:45:30" (1/3) ... [2019-10-02 16:45:33,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675cda99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:45:33, skipping insertion in model container [2019-10-02 16:45:33,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:31" (2/3) ... [2019-10-02 16:45:33,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675cda99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:45:33, skipping insertion in model container [2019-10-02 16:45:33,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:45:33" (3/3) ... [2019-10-02 16:45:33,325 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label29.c [2019-10-02 16:45:33,336 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:45:33,346 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:45:33,363 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:45:33,396 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:45:33,397 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:45:33,397 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:45:33,397 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:45:33,397 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:45:33,398 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:45:33,398 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:45:33,398 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:45:33,432 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-10-02 16:45:33,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-02 16:45:33,445 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:45:33,447 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:33,449 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:45:33,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:45:33,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1243928705, now seen corresponding path program 1 times [2019-10-02 16:45:33,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:45:33,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:33,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:45:33,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:33,506 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:45:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:45:33,968 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 16:45:33,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:45:33,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:45:33,971 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:45:33,980 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:45:33,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:45:33,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:45:33,999 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-10-02 16:45:35,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:45:35,032 INFO L93 Difference]: Finished difference Result 346 states and 508 transitions. [2019-10-02 16:45:35,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:45:35,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2019-10-02 16:45:35,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:45:35,062 INFO L225 Difference]: With dead ends: 346 [2019-10-02 16:45:35,062 INFO L226 Difference]: Without dead ends: 278 [2019-10-02 16:45:35,065 INFO L640 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 [2019-10-02 16:45:35,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-02 16:45:35,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-10-02 16:45:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-02 16:45:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 400 transitions. [2019-10-02 16:45:35,133 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 400 transitions. Word has length 107 [2019-10-02 16:45:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:45:35,134 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 400 transitions. [2019-10-02 16:45:35,134 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:45:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 400 transitions. [2019-10-02 16:45:35,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-02 16:45:35,138 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:45:35,139 INFO L411 BasicCegarLoop]: trace histogram [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, 1, 1] [2019-10-02 16:45:35,139 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:45:35,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:45:35,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1742380424, now seen corresponding path program 1 times [2019-10-02 16:45:35,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:45:35,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:35,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:45:35,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:35,142 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:45:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:45:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:45:35,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:45:35,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 16:45:35,310 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:45:35,312 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 16:45:35,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 16:45:35,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 16:45:35,313 INFO L87 Difference]: Start difference. First operand 278 states and 400 transitions. Second operand 6 states. [2019-10-02 16:45:36,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:45:36,119 INFO L93 Difference]: Finished difference Result 431 states and 612 transitions. [2019-10-02 16:45:36,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 16:45:36,120 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2019-10-02 16:45:36,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:45:36,126 INFO L225 Difference]: With dead ends: 431 [2019-10-02 16:45:36,126 INFO L226 Difference]: Without dead ends: 431 [2019-10-02 16:45:36,127 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 16:45:36,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2019-10-02 16:45:36,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 419. [2019-10-02 16:45:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2019-10-02 16:45:36,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 588 transitions. [2019-10-02 16:45:36,170 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 588 transitions. Word has length 117 [2019-10-02 16:45:36,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:45:36,171 INFO L475 AbstractCegarLoop]: Abstraction has 419 states and 588 transitions. [2019-10-02 16:45:36,171 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 16:45:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 588 transitions. [2019-10-02 16:45:36,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-02 16:45:36,175 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:45:36,176 INFO L411 BasicCegarLoop]: trace histogram [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, 1] [2019-10-02 16:45:36,176 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:45:36,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:45:36,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1357354234, now seen corresponding path program 1 times [2019-10-02 16:45:36,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:45:36,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:36,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:45:36,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:36,178 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:45:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:45:36,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:45:36,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:45:36,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:45:36,326 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:45:36,329 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:45:36,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:45:36,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:45:36,329 INFO L87 Difference]: Start difference. First operand 419 states and 588 transitions. Second operand 3 states. [2019-10-02 16:45:36,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:45:36,859 INFO L93 Difference]: Finished difference Result 828 states and 1140 transitions. [2019-10-02 16:45:36,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:45:36,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-02 16:45:36,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:45:36,867 INFO L225 Difference]: With dead ends: 828 [2019-10-02 16:45:36,867 INFO L226 Difference]: Without dead ends: 828 [2019-10-02 16:45:36,867 INFO L640 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 [2019-10-02 16:45:36,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2019-10-02 16:45:36,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2019-10-02 16:45:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2019-10-02 16:45:36,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1140 transitions. [2019-10-02 16:45:36,900 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1140 transitions. Word has length 118 [2019-10-02 16:45:36,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:45:36,901 INFO L475 AbstractCegarLoop]: Abstraction has 828 states and 1140 transitions. [2019-10-02 16:45:36,901 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:45:36,901 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1140 transitions. [2019-10-02 16:45:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-02 16:45:36,908 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:45:36,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:36,908 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:45:36,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:45:36,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1051124638, now seen corresponding path program 1 times [2019-10-02 16:45:36,909 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:45:36,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:36,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:45:36,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:36,911 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:45:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:45:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:45:37,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:45:37,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 16:45:37,031 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:45:37,032 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 16:45:37,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 16:45:37,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 16:45:37,033 INFO L87 Difference]: Start difference. First operand 828 states and 1140 transitions. Second operand 6 states. [2019-10-02 16:45:37,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:45:37,864 INFO L93 Difference]: Finished difference Result 1428 states and 1973 transitions. [2019-10-02 16:45:37,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 16:45:37,866 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2019-10-02 16:45:37,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:45:37,875 INFO L225 Difference]: With dead ends: 1428 [2019-10-02 16:45:37,875 INFO L226 Difference]: Without dead ends: 1428 [2019-10-02 16:45:37,876 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 16:45:37,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2019-10-02 16:45:37,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1400. [2019-10-02 16:45:37,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1400 states. [2019-10-02 16:45:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1853 transitions. [2019-10-02 16:45:37,940 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1853 transitions. Word has length 132 [2019-10-02 16:45:37,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:45:37,940 INFO L475 AbstractCegarLoop]: Abstraction has 1400 states and 1853 transitions. [2019-10-02 16:45:37,941 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 16:45:37,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1853 transitions. [2019-10-02 16:45:37,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-02 16:45:37,947 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:45:37,947 INFO L411 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:37,948 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:45:37,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:45:37,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1449351597, now seen corresponding path program 1 times [2019-10-02 16:45:37,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:45:37,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:37,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:45:37,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:37,951 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:45:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:45:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:45:38,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:45:38,072 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:45:38,073 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 142 with the following transitions: [2019-10-02 16:45:38,076 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [77], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [501], [503], [757], [761], [770], [774], [776], [781], [782], [783], [785], [786] [2019-10-02 16:45:38,159 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:45:38,159 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)